269 files changed, 6835 insertions, 1143 deletions
diff --git a/core/src/main/java/spark/network/netty/FileClient.java b/core/src/main/java/spark/network/netty/FileClient.java
index 3a62dacbc8..0625a6d502 100644
--- a/core/src/main/java/spark/network/netty/FileClient.java
+++ b/core/src/main/java/spark/network/netty/FileClient.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty;
 
 import io.netty.bootstrap.Bootstrap;
@@ -8,15 +25,20 @@ import io.netty.channel.ChannelOption;
 import io.netty.channel.oio.OioEventLoopGroup;
 import io.netty.channel.socket.oio.OioSocketChannel;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 class FileClient {
 
+  private Logger LOG = LoggerFactory.getLogger(this.getClass().getName());
   private FileClientHandler handler = null;
   private Channel channel = null;
   private Bootstrap bootstrap = null;
+  private int connectTimeout = 60*1000; // 1 min
 
-  public FileClient(FileClientHandler handler) {
+  public FileClient(FileClientHandler handler, int connectTimeout) {
     this.handler = handler;
+    this.connectTimeout = connectTimeout;
   }
 
   public void init() {
@@ -25,25 +47,10 @@ class FileClient {
       .channel(OioSocketChannel.class)
       .option(ChannelOption.SO_KEEPALIVE, true)
       .option(ChannelOption.TCP_NODELAY, true)
+      .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, connectTimeout)
       .handler(new FileClientChannelInitializer(handler));
   }
 
-  public static final class ChannelCloseListener implements ChannelFutureListener {
-    private FileClient fc = null;
-
-    public ChannelCloseListener(FileClient fc){
-      this.fc = fc;
-    }
-
-    @Override
-    public void operationComplete(ChannelFuture future) {
-      if (fc.bootstrap!=null){
-        fc.bootstrap.shutdown();
-        fc.bootstrap = null;
-      }
-    }
-  }
-
   public void connect(String host, int port) {
     try {
       // Start the connection attempt.
@@ -58,8 +65,8 @@ class FileClient {
   public void waitForClose() {
     try {
       channel.closeFuture().sync();
-    } catch (InterruptedException e){
-      e.printStackTrace();
+    } catch (InterruptedException e) {
+      LOG.warn("FileClient interrupted", e);
     }
   }
 
diff --git a/core/src/main/java/spark/network/netty/FileClientChannelInitializer.java b/core/src/main/java/spark/network/netty/FileClientChannelInitializer.java
index af25baf641..05ad4b61d7 100644
--- a/core/src/main/java/spark/network/netty/FileClientChannelInitializer.java
+++ b/core/src/main/java/spark/network/netty/FileClientChannelInitializer.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty;
 
 import io.netty.buffer.BufType;
diff --git a/core/src/main/java/spark/network/netty/FileClientHandler.java b/core/src/main/java/spark/network/netty/FileClientHandler.java
index 2069dee5ca..e8cd9801f6 100644
--- a/core/src/main/java/spark/network/netty/FileClientHandler.java
+++ b/core/src/main/java/spark/network/netty/FileClientHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty;
 
 import io.netty.buffer.ByteBuf;
@@ -9,7 +26,14 @@ abstract class FileClientHandler extends ChannelInboundByteHandlerAdapter {
 
   private FileHeader currentHeader = null;
 
+  private volatile boolean handlerCalled = false;
+
+  public boolean isComplete() {
+    return handlerCalled;
+  }
+
   public abstract void handle(ChannelHandlerContext ctx, ByteBuf in, FileHeader header);
+  public abstract void handleError(String blockId);
 
   @Override
   public ByteBuf newInboundBuffer(ChannelHandlerContext ctx) {
@@ -26,6 +50,7 @@ abstract class FileClientHandler extends ChannelInboundByteHandlerAdapter {
     // get file
     if(in.readableBytes() >= currentHeader.fileLen()) {
       handle(ctx, in, currentHeader);
+      handlerCalled = true;
       currentHeader = null;
       ctx.close();
     }
diff --git a/core/src/main/java/spark/network/netty/FileServer.java b/core/src/main/java/spark/network/netty/FileServer.java
index dd3a557ae5..9f009a61d5 100644
--- a/core/src/main/java/spark/network/netty/FileServer.java
+++ b/core/src/main/java/spark/network/netty/FileServer.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty;
 
 import java.net.InetSocketAddress;
diff --git a/core/src/main/java/spark/network/netty/FileServerChannelInitializer.java b/core/src/main/java/spark/network/netty/FileServerChannelInitializer.java
index 8f1f5c65cd..50c57a81a3 100644
--- a/core/src/main/java/spark/network/netty/FileServerChannelInitializer.java
+++ b/core/src/main/java/spark/network/netty/FileServerChannelInitializer.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty;
 
 import io.netty.channel.ChannelInitializer;
diff --git a/core/src/main/java/spark/network/netty/FileServerHandler.java b/core/src/main/java/spark/network/netty/FileServerHandler.java
index a78eddb1b5..176ba8da49 100644
--- a/core/src/main/java/spark/network/netty/FileServerHandler.java
+++ b/core/src/main/java/spark/network/netty/FileServerHandler.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty;
 
 import java.io.File;
diff --git a/core/src/main/java/spark/network/netty/PathResolver.java b/core/src/main/java/spark/network/netty/PathResolver.java
index 302411672c..f446c55b19 100755
--- a/core/src/main/java/spark/network/netty/PathResolver.java
+++ b/core/src/main/java/spark/network/netty/PathResolver.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty;
 
 
diff --git a/core/src/main/resources/spark/deploy/static/bootstrap-responsive.min.css b/core/src/main/resources/spark/deploy/static/bootstrap-responsive.min.css
deleted file mode 100644
index 1f55036a07..0000000000
--- a/core/src/main/resources/spark/deploy/static/bootstrap-responsive.min.css
+++ /dev/null
@@ -1,9 +0,0 @@
-/*!
- * Bootstrap Responsive v2.0.4
- *
- * Copyright 2012 Twitter, Inc
- * Licensed under the Apache License v2.0
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Designed and built with all the love in the world @twitter by @mdo and @fat.
- */.clearfix{*zoom:1}.clearfix:before,.clearfix:after{display:table;content:""}.clearfix:after{clear:both}.hide-text{font:0/0 a;color:transparent;text-shadow:none;background-color:transparent;border:0}.input-block-level{display:block;width:100%;min-height:28px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;-ms-box-sizing:border-box;box-sizing:border-box}.hidden{display:none;visibility:hidden}.visible-phone{display:none!important}.visible-tablet{display:none!important}.hidden-desktop{display:none!important}@media(max-width:767px){.visible-phone{display:inherit!important}.hidden-phone{display:none!important}.hidden-desktop{display:inherit!important}.visible-desktop{display:none!important}}@media(min-width:768px) and (max-width:979px){.visible-tablet{display:inherit!important}.hidden-tablet{display:none!important}.hidden-desktop{display:inherit!important}.visible-desktop{display:none!important}}@media(max-width:480px){.nav-collapse{-webkit-transform:translate3d(0,0,0)}.page-header h1 small{display:block;line-height:18px}input[type="checkbox"],input[type="radio"]{border:1px solid #ccc}.form-horizontal .control-group>label{float:none;width:auto;padding-top:0;text-align:left}.form-horizontal .controls{margin-left:0}.form-horizontal .control-list{padding-top:0}.form-horizontal .form-actions{padding-right:10px;padding-left:10px}.modal{position:absolute;top:10px;right:10px;left:10px;width:auto;margin:0}.modal.fade.in{top:auto}.modal-header .close{padding:10px;margin:-10px}.carousel-caption{position:static}}@media(max-width:767px){body{padding-right:20px;padding-left:20px}.navbar-fixed-top,.navbar-fixed-bottom{margin-right:-20px;margin-left:-20px}.container-fluid{padding:0}.dl-horizontal dt{float:none;width:auto;clear:none;text-align:left}.dl-horizontal dd{margin-left:0}.container{width:auto}.row-fluid{width:100%}.row,.thumbnails{margin-left:0}[class*="span"],.row-fluid [class*="span"]{display:block;float:none;width:auto;margin-left:0}.input-large,.input-xlarge,.input-xxlarge,input[class*="span"],select[class*="span"],textarea[class*="span"],.uneditable-input{display:block;width:100%;min-height:28px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;-ms-box-sizing:border-box;box-sizing:border-box}.input-prepend input,.input-append input,.input-prepend input[class*="span"],.input-append input[class*="span"]{display:inline-block;width:auto}}@media(min-width:768px) and (max-width:979px){.row{margin-left:-20px;*zoom:1}.row:before,.row:after{display:table;content:""}.row:after{clear:both}[class*="span"]{float:left;margin-left:20px}.container,.navbar-fixed-top .container,.navbar-fixed-bottom 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.nav-collapse .nav.pull-right{float:none;margin-left:0}.nav-collapse,.nav-collapse.collapse{height:0;overflow:hidden}.navbar .btn-navbar{display:block}.navbar-static .navbar-inner{padding-right:10px;padding-left:10px}}@media(min-width:980px){.nav-collapse.collapse{height:auto!important;overflow:visible!important}}
diff --git a/core/src/main/resources/spark/deploy/static/bootstrap.min.css b/core/src/main/resources/spark/deploy/static/bootstrap.min.css
deleted file mode 100644
index b74b4546a6..0000000000
--- a/core/src/main/resources/spark/deploy/static/bootstrap.min.css
+++ /dev/null
@@ -1,9 +0,0 @@
-/*!
- * Bootstrap v2.0.4
- *
- * Copyright 2012 Twitter, Inc
- * Licensed under the Apache License v2.0
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Designed and built with all the love in the world @twitter by @mdo and @fat.
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diff --git a/core/src/main/resources/spark/ui/static/bootstrap-responsive.min.css b/core/src/main/resources/spark/ui/static/bootstrap-responsive.min.css
new file mode 100644
index 0000000000..f4ede63f32
--- /dev/null
+++ b/core/src/main/resources/spark/ui/static/bootstrap-responsive.min.css
@@ -0,0 +1,9 @@
+/*!
+ * Bootstrap Responsive v2.3.2
+ *
+ * Copyright 2012 Twitter, Inc
+ * Licensed under the Apache License v2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Designed and built with all the love in the world @twitter by @mdo and @fat.
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diff --git a/core/src/main/resources/spark/ui/static/bootstrap.min.css b/core/src/main/resources/spark/ui/static/bootstrap.min.css
new file mode 100644
index 0000000000..b6428e6958
--- /dev/null
+++ b/core/src/main/resources/spark/ui/static/bootstrap.min.css
@@ -0,0 +1,9 @@
+/*!
+ * Bootstrap v2.3.2
+ *
+ * Copyright 2012 Twitter, Inc
+ * Licensed under the Apache License v2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Designed and built with all the love in the world @twitter by @mdo and @fat.
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.bar-info{background-color:#4bb1cf;background-image:-moz-linear-gradient(top,#5bc0de,#339bb9);background-image:-webkit-gradient(linear,0 0,0 100%,from(#5bc0de),to(#339bb9));background-image:-webkit-linear-gradient(top,#5bc0de,#339bb9);background-image:-o-linear-gradient(top,#5bc0de,#339bb9);background-image:linear-gradient(to bottom,#5bc0de,#339bb9);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff5bc0de',endColorstr='#ff339bb9',GradientType=0)}.progress-info.progress-striped .bar,.progress-striped .bar-info{background-color:#5bc0de;background-image:-webkit-gradient(linear,0 100%,100% 0,color-stop(0.25,rgba(255,255,255,0.15)),color-stop(0.25,transparent),color-stop(0.5,transparent),color-stop(0.5,rgba(255,255,255,0.15)),color-stop(0.75,rgba(255,255,255,0.15)),color-stop(0.75,transparent),to(transparent));background-image:-webkit-linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent);background-image:-moz-linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent);background-image:-o-linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent);background-image:linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent)}.progress-warning .bar,.progress .bar-warning{background-color:#faa732;background-image:-moz-linear-gradient(top,#fbb450,#f89406);background-image:-webkit-gradient(linear,0 0,0 100%,from(#fbb450),to(#f89406));background-image:-webkit-linear-gradient(top,#fbb450,#f89406);background-image:-o-linear-gradient(top,#fbb450,#f89406);background-image:linear-gradient(to bottom,#fbb450,#f89406);background-repeat:repeat-x;filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#fffbb450',endColorstr='#fff89406',GradientType=0)}.progress-warning.progress-striped .bar,.progress-striped .bar-warning{background-color:#fbb450;background-image:-webkit-gradient(linear,0 100%,100% 0,color-stop(0.25,rgba(255,255,255,0.15)),color-stop(0.25,transparent),color-stop(0.5,transparent),color-stop(0.5,rgba(255,255,255,0.15)),color-stop(0.75,rgba(255,255,255,0.15)),color-stop(0.75,transparent),to(transparent));background-image:-webkit-linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent);background-image:-moz-linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent);background-image:-o-linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent);background-image:linear-gradient(45deg,rgba(255,255,255,0.15) 25%,transparent 25%,transparent 50%,rgba(255,255,255,0.15) 50%,rgba(255,255,255,0.15) 75%,transparent 75%,transparent)}.accordion{margin-bottom:20px}.accordion-group{margin-bottom:2px;border:1px solid #e5e5e5;-webkit-border-radius:4px;-moz-border-radius:4px;border-radius:4px}.accordion-heading{border-bottom:0}.accordion-heading .accordion-toggle{display:block;padding:8px 15px}.accordion-toggle{cursor:pointer}.accordion-inner{padding:9px 15px;border-top:1px solid #e5e5e5}.carousel{position:relative;margin-bottom:20px;line-height:1}.carousel-inner{position:relative;width:100%;overflow:hidden}.carousel-inner>.item{position:relative;display:none;-webkit-transition:.6s ease-in-out left;-moz-transition:.6s ease-in-out left;-o-transition:.6s ease-in-out left;transition:.6s ease-in-out left}.carousel-inner>.item>img,.carousel-inner>.item>a>img{display:block;line-height:1}.carousel-inner>.active,.carousel-inner>.next,.carousel-inner>.prev{display:block}.carousel-inner>.active{left:0}.carousel-inner>.next,.carousel-inner>.prev{position:absolute;top:0;width:100%}.carousel-inner>.next{left:100%}.carousel-inner>.prev{left:-100%}.carousel-inner>.next.left,.carousel-inner>.prev.right{left:0}.carousel-inner>.active.left{left:-100%}.carousel-inner>.active.right{left:100%}.carousel-control{position:absolute;top:40%;left:15px;width:40px;height:40px;margin-top:-20px;font-size:60px;font-weight:100;line-height:30px;color:#fff;text-align:center;background:#222;border:3px solid #fff;-webkit-border-radius:23px;-moz-border-radius:23px;border-radius:23px;opacity:.5;filter:alpha(opacity=50)}.carousel-control.right{right:15px;left:auto}.carousel-control:hover,.carousel-control:focus{color:#fff;text-decoration:none;opacity:.9;filter:alpha(opacity=90)}.carousel-indicators{position:absolute;top:15px;right:15px;z-index:5;margin:0;list-style:none}.carousel-indicators li{display:block;float:left;width:10px;height:10px;margin-left:5px;text-indent:-999px;background-color:#ccc;background-color:rgba(255,255,255,0.25);border-radius:5px}.carousel-indicators .active{background-color:#fff}.carousel-caption{position:absolute;right:0;bottom:0;left:0;padding:15px;background:#333;background:rgba(0,0,0,0.75)}.carousel-caption h4,.carousel-caption p{line-height:20px;color:#fff}.carousel-caption h4{margin:0 0 5px}.carousel-caption p{margin-bottom:0}.hero-unit{padding:60px;margin-bottom:30px;font-size:18px;font-weight:200;line-height:30px;color:inherit;background-color:#eee;-webkit-border-radius:6px;-moz-border-radius:6px;border-radius:6px}.hero-unit h1{margin-bottom:0;font-size:60px;line-height:1;letter-spacing:-1px;color:inherit}.hero-unit li{line-height:30px}.pull-right{float:right}.pull-left{float:left}.hide{display:none}.show{display:block}.invisible{visibility:hidden}.affix{position:fixed}
diff --git a/core/src/main/resources/spark/deploy/static/sorttable.js b/core/src/main/resources/spark/ui/static/sorttable.js
index 7abb9011cc..7abb9011cc 100644
--- a/core/src/main/resources/spark/deploy/static/sorttable.js
+++ b/core/src/main/resources/spark/ui/static/sorttable.js
diff --git a/core/src/main/resources/spark/ui/static/spark-logo-77x50px-hd.png b/core/src/main/resources/spark/ui/static/spark-logo-77x50px-hd.png
new file mode 100644
index 0000000000..6c5f0993c4
--- /dev/null
+++ b/core/src/main/resources/spark/ui/static/spark-logo-77x50px-hd.png
diff --git a/core/src/main/resources/spark/deploy/static/spark_logo.png b/core/src/main/resources/spark/ui/static/spark_logo.png
index 4b18734779..4b18734779 100644
--- a/core/src/main/resources/spark/deploy/static/spark_logo.png
+++ b/core/src/main/resources/spark/ui/static/spark_logo.png
diff --git a/core/src/main/resources/spark/ui/static/webui.css b/core/src/main/resources/spark/ui/static/webui.css
new file mode 100644
index 0000000000..f7537bb766
--- /dev/null
+++ b/core/src/main/resources/spark/ui/static/webui.css
@@ -0,0 +1,49 @@
+.navbar .brand {
+  height: 50px;
+  width: 110px;
+  margin-left: 1px;
+  padding: 0;
+}
+
+.version {
+  line-height: 30px;
+  vertical-align: bottom;
+  font-size: 12px;
+  padding: 0;
+  margin: 0;
+  font-weight: bold;
+  color: #777;
+}
+
+.navbar-inner {
+  padding-top: 2px;
+  height: 50px;
+}
+
+.navbar-inner .nav {
+  margin-top: 5px;
+  font-size: 15px;
+}
+
+
+#infolist {
+  margin-left: 400px;
+  margin-top: 14px;
+}
+
+#infolist li {
+  display: inline;
+  list-style-type: none;
+  list-style-position: outside;
+  padding-right: 20px;
+  padding-top: 10px;
+  padding-bottom: 10px;
+}
+
+.progress-cell {
+  width: 134px;
+  border-right: 0;
+  padding: 0;
+  padding-top: 7px;
+  padding-left: 4px;
+}
diff --git a/core/src/main/scala/spark/Accumulators.scala b/core/src/main/scala/spark/Accumulators.scala
index 57c6df35be..6ff92ce833 100644
--- a/core/src/main/scala/spark/Accumulators.scala
+++ b/core/src/main/scala/spark/Accumulators.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io._
diff --git a/core/src/main/scala/spark/Aggregator.scala b/core/src/main/scala/spark/Aggregator.scala
index df8ce9c054..136b4da61e 100644
--- a/core/src/main/scala/spark/Aggregator.scala
+++ b/core/src/main/scala/spark/Aggregator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.util.{HashMap => JHashMap}
diff --git a/core/src/main/scala/spark/BlockStoreShuffleFetcher.scala b/core/src/main/scala/spark/BlockStoreShuffleFetcher.scala
index e1fb02157a..8f6953b1f5 100644
--- a/core/src/main/scala/spark/BlockStoreShuffleFetcher.scala
+++ b/core/src/main/scala/spark/BlockStoreShuffleFetcher.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import scala.collection.mutable.ArrayBuffer
@@ -58,6 +75,7 @@ private[spark] class BlockStoreShuffleFetcher extends ShuffleFetcher with Loggin
 
     CompletionIterator[(K,V), Iterator[(K,V)]](itr, {
       val shuffleMetrics = new ShuffleReadMetrics
+      shuffleMetrics.shuffleFinishTime = System.currentTimeMillis
       shuffleMetrics.remoteFetchTime = blockFetcherItr.remoteFetchTime
       shuffleMetrics.fetchWaitTime = blockFetcherItr.fetchWaitTime
       shuffleMetrics.remoteBytesRead = blockFetcherItr.remoteBytesRead
diff --git a/core/src/main/scala/spark/Cache.scala b/core/src/main/scala/spark/Cache.scala
index 20d677a854..b0c83ce59d 100644
--- a/core/src/main/scala/spark/Cache.scala
+++ b/core/src/main/scala/spark/Cache.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.util.concurrent.atomic.AtomicInteger
diff --git a/core/src/main/scala/spark/CacheManager.scala b/core/src/main/scala/spark/CacheManager.scala
index f7a2b7e802..81314805a9 100644
--- a/core/src/main/scala/spark/CacheManager.scala
+++ b/core/src/main/scala/spark/CacheManager.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import scala.collection.mutable.{ArrayBuffer, HashSet}
diff --git a/core/src/main/scala/spark/ClosureCleaner.scala b/core/src/main/scala/spark/ClosureCleaner.scala
index d5e7132ff9..8b39241095 100644
--- a/core/src/main/scala/spark/ClosureCleaner.scala
+++ b/core/src/main/scala/spark/ClosureCleaner.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.lang.reflect.Field
diff --git a/core/src/main/scala/spark/Dependency.scala b/core/src/main/scala/spark/Dependency.scala
index 2af44aa383..d17e70a4fa 100644
--- a/core/src/main/scala/spark/Dependency.scala
+++ b/core/src/main/scala/spark/Dependency.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 /**
diff --git a/core/src/main/scala/spark/DoubleRDDFunctions.scala b/core/src/main/scala/spark/DoubleRDDFunctions.scala
index 178d31a73b..93ef097702 100644
--- a/core/src/main/scala/spark/DoubleRDDFunctions.scala
+++ b/core/src/main/scala/spark/DoubleRDDFunctions.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import spark.partial.BoundedDouble
diff --git a/core/src/main/scala/spark/FetchFailedException.scala b/core/src/main/scala/spark/FetchFailedException.scala
index 40b0193f19..a2dae6cae9 100644
--- a/core/src/main/scala/spark/FetchFailedException.scala
+++ b/core/src/main/scala/spark/FetchFailedException.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import spark.storage.BlockManagerId
diff --git a/core/src/main/scala/spark/HadoopWriter.scala b/core/src/main/scala/spark/HadoopWriter.scala
index 5e8396edb9..b1fe0075a3 100644
--- a/core/src/main/scala/spark/HadoopWriter.scala
+++ b/core/src/main/scala/spark/HadoopWriter.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.apache.hadoop.mapred
 
 import org.apache.hadoop.fs.FileSystem
diff --git a/core/src/main/scala/spark/HttpFileServer.scala b/core/src/main/scala/spark/HttpFileServer.scala
index 00901d95e2..a13a7a2859 100644
--- a/core/src/main/scala/spark/HttpFileServer.scala
+++ b/core/src/main/scala/spark/HttpFileServer.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io.{File}
@@ -42,4 +59,4 @@ private[spark] class HttpFileServer extends Logging {
     return dir + "/" + file.getName
   }
   
-}
-\ No newline at end of file
+}
diff --git a/core/src/main/scala/spark/HttpServer.scala b/core/src/main/scala/spark/HttpServer.scala
index 4e0507c080..c9dffbc631 100644
--- a/core/src/main/scala/spark/HttpServer.scala
+++ b/core/src/main/scala/spark/HttpServer.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io.File
diff --git a/core/src/main/scala/spark/JavaSerializer.scala b/core/src/main/scala/spark/JavaSerializer.scala
index b04a27d073..04c5f44e6b 100644
--- a/core/src/main/scala/spark/JavaSerializer.scala
+++ b/core/src/main/scala/spark/JavaSerializer.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io._
diff --git a/core/src/main/scala/spark/KryoSerializer.scala b/core/src/main/scala/spark/KryoSerializer.scala
index d723ab7b1e..ee37da7948 100644
--- a/core/src/main/scala/spark/KryoSerializer.scala
+++ b/core/src/main/scala/spark/KryoSerializer.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io._
@@ -210,6 +227,10 @@ class KryoSerializer extends spark.serializer.Serializer with Logging {
       val reg = Class.forName(regCls, true, classLoader).newInstance().asInstanceOf[KryoRegistrator]
       reg.registerClasses(kryo)
     }
+
+    // Allow disabling Kryo reference tracking if user knows their object graphs don't have loops
+    kryo.setReferences(System.getProperty("spark.kryo.referenceTracking", "true").toBoolean)
+
     kryo
   }
 
diff --git a/core/src/main/scala/spark/Logging.scala b/core/src/main/scala/spark/Logging.scala
index 0fc8c31463..79b0362830 100644
--- a/core/src/main/scala/spark/Logging.scala
+++ b/core/src/main/scala/spark/Logging.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import org.slf4j.Logger
diff --git a/core/src/main/scala/spark/MapOutputTracker.scala b/core/src/main/scala/spark/MapOutputTracker.scala
index fde597ffd1..2c417e31db 100644
--- a/core/src/main/scala/spark/MapOutputTracker.scala
+++ b/core/src/main/scala/spark/MapOutputTracker.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io._
diff --git a/core/src/main/scala/spark/PairRDDFunctions.scala b/core/src/main/scala/spark/PairRDDFunctions.scala
index fa4bbfc76f..6b0cc2fbf1 100644
--- a/core/src/main/scala/spark/PairRDDFunctions.scala
+++ b/core/src/main/scala/spark/PairRDDFunctions.scala
@@ -1,5 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
+import java.nio.ByteBuffer
 import java.util.{Date, HashMap => JHashMap}
 import java.text.SimpleDateFormat
 
@@ -20,6 +38,7 @@ import org.apache.hadoop.mapred.OutputFormat
 
 import org.apache.hadoop.mapreduce.lib.output.{FileOutputFormat => NewFileOutputFormat}
 import org.apache.hadoop.mapreduce.{OutputFormat => NewOutputFormat, RecordWriter => NewRecordWriter, Job => NewAPIHadoopJob, HadoopMapReduceUtil}
+import org.apache.hadoop.security.UserGroupInformation
 
 import spark.partial.BoundedDouble
 import spark.partial.PartialResult
@@ -64,8 +83,7 @@ class PairRDDFunctions[K: ClassManifest, V: ClassManifest](
         throw new SparkException("Default partitioner cannot partition array keys.")
       }
     }
-    val aggregator =
-      new Aggregator[K, V, C](createCombiner, mergeValue, mergeCombiners)
+    val aggregator = new Aggregator[K, V, C](createCombiner, mergeValue, mergeCombiners)
     if (self.partitioner == Some(partitioner)) {
       self.mapPartitions(aggregator.combineValuesByKey(_), true)
     } else if (mapSideCombine) {
@@ -97,7 +115,16 @@ class PairRDDFunctions[K: ClassManifest, V: ClassManifest](
    * list concatenation, 0 for addition, or 1 for multiplication.).
    */
   def foldByKey(zeroValue: V, partitioner: Partitioner)(func: (V, V) => V): RDD[(K, V)] = {
-    combineByKey[V]({v: V => func(zeroValue, v)}, func, func, partitioner)
+    // Serialize the zero value to a byte array so that we can get a new clone of it on each key
+    val zeroBuffer = SparkEnv.get.closureSerializer.newInstance().serialize(zeroValue)
+    val zeroArray = new Array[Byte](zeroBuffer.limit)
+    zeroBuffer.get(zeroArray)
+
+    // When deserializing, use a lazy val to create just one instance of the serializer per task
+    lazy val cachedSerializer = SparkEnv.get.closureSerializer.newInstance()
+    def createZero() = cachedSerializer.deserialize[V](ByteBuffer.wrap(zeroArray))
+
+    combineByKey[V]((v: V) => func(createZero(), v), func, func, partitioner)
   }
 
   /**
diff --git a/core/src/main/scala/spark/Partition.scala b/core/src/main/scala/spark/Partition.scala
index e384308ef6..2a4edcec98 100644
--- a/core/src/main/scala/spark/Partition.scala
+++ b/core/src/main/scala/spark/Partition.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 /**
diff --git a/core/src/main/scala/spark/Partitioner.scala b/core/src/main/scala/spark/Partitioner.scala
index 6f8cd17c88..660af70d52 100644
--- a/core/src/main/scala/spark/Partitioner.scala
+++ b/core/src/main/scala/spark/Partitioner.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 /**
diff --git a/core/src/main/scala/spark/RDD.scala b/core/src/main/scala/spark/RDD.scala
index 709271d4eb..ca7cdd622a 100644
--- a/core/src/main/scala/spark/RDD.scala
+++ b/core/src/main/scala/spark/RDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.util.Random
@@ -105,6 +122,9 @@ abstract class RDD[T: ClassManifest](
   // Methods and fields available on all RDDs
   // =======================================================================
 
+  /** The SparkContext that created this RDD. */
+  def sparkContext: SparkContext = sc
+
   /** A unique ID for this RDD (within its SparkContext). */
   val id: Int = sc.newRddId()
 
@@ -117,6 +137,14 @@ abstract class RDD[T: ClassManifest](
     this
   }
 
+  /** User-defined generator of this RDD*/
+  var generator = Utils.getCallSiteInfo.firstUserClass
+
+  /** Reset generator*/
+  def setGenerator(_generator: String) = {
+    generator = _generator
+  }
+
   /**
    * Set this RDD's storage level to persist its values across operations after the first time
    * it is computed. This can only be used to assign a new storage level if the RDD does not
@@ -273,31 +301,35 @@ abstract class RDD[T: ClassManifest](
   def takeSample(withReplacement: Boolean, num: Int, seed: Int): Array[T] = {
     var fraction = 0.0
     var total = 0
-    val multiplier = 3.0
-    val initialCount = count()
+    var multiplier = 3.0
+    var initialCount = this.count()
     var maxSelected = 0
 
+    if (num < 0) {
+      throw new IllegalArgumentException("Negative number of elements requested")
+    }
+
     if (initialCount > Integer.MAX_VALUE - 1) {
       maxSelected = Integer.MAX_VALUE - 1
     } else {
       maxSelected = initialCount.toInt
     }
 
-    if (num > initialCount) {
+    if (num > initialCount && !withReplacement) {
       total = maxSelected
-      fraction = math.min(multiplier * (maxSelected + 1) / initialCount, 1.0)
-    } else if (num < 0) {
-      throw(new IllegalArgumentException("Negative number of elements requested"))
+      fraction = multiplier * (maxSelected + 1) / initialCount
     } else {
-      fraction = math.min(multiplier * (num + 1) / initialCount, 1.0)
+      fraction = multiplier * (num + 1) / initialCount
       total = num
     }
 
     val rand = new Random(seed)
-    var samples = this.sample(withReplacement, fraction, rand.nextInt).collect()
+    var samples = this.sample(withReplacement, fraction, rand.nextInt()).collect()
 
+    // If the first sample didn't turn out large enough, keep trying to take samples;
+    // this shouldn't happen often because we use a big multiplier for thei initial size
     while (samples.length < total) {
-      samples = this.sample(withReplacement, fraction, rand.nextInt).collect()
+      samples = this.sample(withReplacement, fraction, rand.nextInt()).collect()
     }
 
     Utils.randomizeInPlace(samples, rand).take(total)
@@ -355,7 +387,7 @@ abstract class RDD[T: ClassManifest](
   /**
    * Return an RDD created by piping elements to a forked external process.
    */
-  def pipe(command: String, env: Map[String, String]): RDD[String] = 
+  def pipe(command: String, env: Map[String, String]): RDD[String] =
     new PipedRDD(this, command, env)
 
 
@@ -366,24 +398,24 @@ abstract class RDD[T: ClassManifest](
    * @param command command to run in forked process.
    * @param env environment variables to set.
    * @param printPipeContext Before piping elements, this function is called as an oppotunity
-   *                         to pipe context data. Print line function (like out.println) will be 
+   *                         to pipe context data. Print line function (like out.println) will be
    *                         passed as printPipeContext's parameter.
-   * @param printRDDElement Use this function to customize how to pipe elements. This function 
-   *                        will be called with each RDD element as the 1st parameter, and the 
+   * @param printRDDElement Use this function to customize how to pipe elements. This function
+   *                        will be called with each RDD element as the 1st parameter, and the
    *                        print line function (like out.println()) as the 2nd parameter.
    *                        An example of pipe the RDD data of groupBy() in a streaming way,
    *                        instead of constructing a huge String to concat all the elements:
-   *                        def printRDDElement(record:(String, Seq[String]), f:String=>Unit) = 
+   *                        def printRDDElement(record:(String, Seq[String]), f:String=>Unit) =
    *                          for (e <- record._2){f(e)}
    * @return the result RDD
    */
   def pipe(
-      command: Seq[String], 
-      env: Map[String, String] = Map(), 
+      command: Seq[String],
+      env: Map[String, String] = Map(),
       printPipeContext: (String => Unit) => Unit = null,
-      printRDDElement: (T, String => Unit) => Unit = null): RDD[String] = 
-    new PipedRDD(this, command, env, 
-      if (printPipeContext ne null) sc.clean(printPipeContext) else null, 
+      printRDDElement: (T, String => Unit) => Unit = null): RDD[String] =
+    new PipedRDD(this, command, env,
+      if (printPipeContext ne null) sc.clean(printPipeContext) else null,
       if (printRDDElement ne null) sc.clean(printRDDElement) else null)
 
   /**
@@ -763,10 +795,20 @@ abstract class RDD[T: ClassManifest](
     }.reduce { (queue1, queue2) =>
       queue1 ++= queue2
       queue1
-    }.toArray
+    }.toArray.sorted(ord.reverse)
   }
 
   /**
+   * Returns the first K elements from this RDD as defined by
+   * the specified implicit Ordering[T] and maintains the
+   * ordering.
+   * @param num the number of top elements to return
+   * @param ord the implicit ordering for T
+   * @return an array of top elements
+   */
+  def takeOrdered(num: Int)(implicit ord: Ordering[T]): Array[T] = top(num)(ord.reverse)
+
+  /**
    * Save this RDD as a text file, using string representations of elements.
    */
   def saveAsTextFile(path: String) {
@@ -840,7 +882,7 @@ abstract class RDD[T: ClassManifest](
   private var storageLevel: StorageLevel = StorageLevel.NONE
 
   /** Record user function generating this RDD. */
-  private[spark] val origin = Utils.getSparkCallSite
+  private[spark] val origin = Utils.formatSparkCallSite
 
   private[spark] def elementClassManifest: ClassManifest[T] = classManifest[T]
 
diff --git a/core/src/main/scala/spark/RDDCheckpointData.scala b/core/src/main/scala/spark/RDDCheckpointData.scala
index 57e0405fb4..b615f820eb 100644
--- a/core/src/main/scala/spark/RDDCheckpointData.scala
+++ b/core/src/main/scala/spark/RDDCheckpointData.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import org.apache.hadoop.fs.Path
diff --git a/core/src/main/scala/spark/SequenceFileRDDFunctions.scala b/core/src/main/scala/spark/SequenceFileRDDFunctions.scala
index 2911f9036e..9f30b7f22f 100644
--- a/core/src/main/scala/spark/SequenceFileRDDFunctions.scala
+++ b/core/src/main/scala/spark/SequenceFileRDDFunctions.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io.EOFException
diff --git a/core/src/main/scala/spark/SerializableWritable.scala b/core/src/main/scala/spark/SerializableWritable.scala
index 8306fbf570..0236611ef9 100644
--- a/core/src/main/scala/spark/SerializableWritable.scala
+++ b/core/src/main/scala/spark/SerializableWritable.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io._
diff --git a/core/src/main/scala/spark/ShuffleFetcher.scala b/core/src/main/scala/spark/ShuffleFetcher.scala
index 9513a00126..dcced035e7 100644
--- a/core/src/main/scala/spark/ShuffleFetcher.scala
+++ b/core/src/main/scala/spark/ShuffleFetcher.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import spark.executor.TaskMetrics
diff --git a/core/src/main/scala/spark/SizeEstimator.scala b/core/src/main/scala/spark/SizeEstimator.scala
index f8a4c4e489..6cc57566d7 100644
--- a/core/src/main/scala/spark/SizeEstimator.scala
+++ b/core/src/main/scala/spark/SizeEstimator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.lang.reflect.Field
diff --git a/core/src/main/scala/spark/SoftReferenceCache.scala b/core/src/main/scala/spark/SoftReferenceCache.scala
index 3dd0a4b1f9..f41a379582 100644
--- a/core/src/main/scala/spark/SoftReferenceCache.scala
+++ b/core/src/main/scala/spark/SoftReferenceCache.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import com.google.common.collect.MapMaker
diff --git a/core/src/main/scala/spark/SparkContext.scala b/core/src/main/scala/spark/SparkContext.scala
index bc05d08fd6..46b9935cb7 100644
--- a/core/src/main/scala/spark/SparkContext.scala
+++ b/core/src/main/scala/spark/SparkContext.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io._
@@ -36,6 +53,7 @@ import org.apache.hadoop.mapred.TextInputFormat
 import org.apache.hadoop.mapreduce.{InputFormat => NewInputFormat}
 import org.apache.hadoop.mapreduce.{Job => NewHadoopJob}
 import org.apache.hadoop.mapreduce.lib.input.{FileInputFormat => NewFileInputFormat}
+import org.apache.hadoop.security.UserGroupInformation
 
 import org.apache.mesos.MesosNativeLibrary
 
@@ -46,9 +64,9 @@ import spark.scheduler.{DAGScheduler, ResultTask, ShuffleMapTask, SparkListener,
 import spark.scheduler.cluster.{StandaloneSchedulerBackend, SparkDeploySchedulerBackend, ClusterScheduler}
 import spark.scheduler.local.LocalScheduler
 import spark.scheduler.mesos.{CoarseMesosSchedulerBackend, MesosSchedulerBackend}
-import spark.storage.{BlockManagerUI, StorageStatus, StorageUtils, RDDInfo}
+import spark.storage.{StorageStatus, StorageUtils, RDDInfo}
 import spark.util.{MetadataCleaner, TimeStampedHashMap}
-
+import ui.{SparkUI}
 
 /**
  * Main entry point for Spark functionality. A SparkContext represents the connection to a Spark
@@ -94,11 +112,6 @@ class SparkContext(
     isLocal)
   SparkEnv.set(env)
 
-  // Start the BlockManager UI
-  private[spark] val ui = new BlockManagerUI(
-    env.actorSystem, env.blockManager.master.driverActor, this)
-  ui.start()
-
   // Used to store a URL for each static file/jar together with the file's local timestamp
   private[spark] val addedFiles = HashMap[String, Long]()
   private[spark] val addedJars = HashMap[String, Long]()
@@ -107,6 +120,9 @@ class SparkContext(
   private[spark] val persistentRdds = new TimeStampedHashMap[Int, RDD[_]]
   private[spark] val metadataCleaner = new MetadataCleaner("SparkContext", this.cleanup)
 
+  // Initalize the Spark UI
+  private[spark] val ui = new SparkUI(this)
+  ui.bind()
 
   // Add each JAR given through the constructor
   if (jars != null) {
@@ -116,13 +132,14 @@ class SparkContext(
   // Environment variables to pass to our executors
   private[spark] val executorEnvs = HashMap[String, String]()
   // Note: SPARK_MEM is included for Mesos, but overwritten for standalone mode in ExecutorRunner
-  for (key <- Seq("SPARK_MEM", "SPARK_CLASSPATH", "SPARK_LIBRARY_PATH", "SPARK_JAVA_OPTS",
-      "SPARK_TESTING")) {
+  for (key <- Seq("SPARK_CLASSPATH", "SPARK_LIBRARY_PATH", "SPARK_JAVA_OPTS", "SPARK_TESTING")) {
     val value = System.getenv(key)
     if (value != null) {
       executorEnvs(key) = value
     }
   }
+  // Since memory can be set with a system property too, use that
+  executorEnvs("SPARK_MEM") = SparkContext.executorMemoryRequested + "m"
   if (environment != null) {
     executorEnvs ++= environment
   }
@@ -157,14 +174,12 @@ class SparkContext(
         scheduler
 
       case LOCAL_CLUSTER_REGEX(numSlaves, coresPerSlave, memoryPerSlave) =>
-        // Check to make sure SPARK_MEM <= memoryPerSlave. Otherwise Spark will just hang.
+        // Check to make sure memory requested <= memoryPerSlave. Otherwise Spark will just hang.
         val memoryPerSlaveInt = memoryPerSlave.toInt
-        val sparkMemEnv = System.getenv("SPARK_MEM")
-        val sparkMemEnvInt = if (sparkMemEnv != null) Utils.memoryStringToMb(sparkMemEnv) else 512
-        if (sparkMemEnvInt > memoryPerSlaveInt) {
+        if (SparkContext.executorMemoryRequested > memoryPerSlaveInt) {
           throw new SparkException(
-            "Slave memory (%d MB) cannot be smaller than SPARK_MEM (%d MB)".format(
-              memoryPerSlaveInt, sparkMemEnvInt))
+            "Asked to launch cluster with %d MB RAM / worker but requested %d MB/worker".format(
+              memoryPerSlaveInt, SparkContext.executorMemoryRequested))
         }
 
         val scheduler = new ClusterScheduler(this)
@@ -216,6 +231,8 @@ class SparkContext(
   @volatile private var dagScheduler = new DAGScheduler(taskScheduler)
   dagScheduler.start()
 
+  ui.start()
+
   /** A default Hadoop Configuration for the Hadoop code (e.g. file systems) that we reuse. */
   val hadoopConfiguration = {
     val conf = SparkHadoopUtil.newConfiguration()
@@ -578,6 +595,7 @@ class SparkContext(
 
   /** Shut down the SparkContext. */
   def stop() {
+    ui.stop()
     // Do this only if not stopped already - best case effort.
     // prevent NPE if stopped more than once.
     val dagSchedulerCopy = dagScheduler
@@ -630,7 +648,7 @@ class SparkContext(
       partitions: Seq[Int],
       allowLocal: Boolean,
       resultHandler: (Int, U) => Unit) {
-    val callSite = Utils.getSparkCallSite
+    val callSite = Utils.formatSparkCallSite
     logInfo("Starting job: " + callSite)
     val start = System.nanoTime
     val result = dagScheduler.runJob(rdd, func, partitions, callSite, allowLocal, resultHandler, localProperties.value)
@@ -713,7 +731,7 @@ class SparkContext(
       func: (TaskContext, Iterator[T]) => U,
       evaluator: ApproximateEvaluator[U, R],
       timeout: Long): PartialResult[R] = {
-    val callSite = Utils.getSparkCallSite
+    val callSite = Utils.formatSparkCallSite
     logInfo("Starting job: " + callSite)
     val start = System.nanoTime
     val result = dagScheduler.runApproximateJob(rdd, func, evaluator, callSite, timeout, localProperties.value)
@@ -882,6 +900,15 @@ object SparkContext {
 
   /** Find the JAR that contains the class of a particular object */
   def jarOfObject(obj: AnyRef): Seq[String] = jarOfClass(obj.getClass)
+
+  /** Get the amount of memory per executor requested through system properties or SPARK_MEM */
+  private[spark] val executorMemoryRequested = {
+    // TODO: Might need to add some extra memory for the non-heap parts of the JVM
+    Option(System.getProperty("spark.executor.memory"))
+      .orElse(Option(System.getenv("SPARK_MEM")))
+      .map(Utils.memoryStringToMb)
+      .getOrElse(512)
+  }
 }
 
 
diff --git a/core/src/main/scala/spark/SparkEnv.scala b/core/src/main/scala/spark/SparkEnv.scala
index 7ccde2e818..f2bdc11bdb 100644
--- a/core/src/main/scala/spark/SparkEnv.scala
+++ b/core/src/main/scala/spark/SparkEnv.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import collection.mutable
@@ -59,7 +76,8 @@ class SparkEnv (
 
   def createPythonWorker(pythonExec: String, envVars: Map[String, String]): java.net.Socket = {
     synchronized {
-      pythonWorkers.getOrElseUpdate((pythonExec, envVars), new PythonWorkerFactory(pythonExec, envVars)).create()
+      val key = (pythonExec, envVars)
+      pythonWorkers.getOrElseUpdate(key, new PythonWorkerFactory(pythonExec, envVars)).create()
     }
   }
 
diff --git a/core/src/main/scala/spark/SparkException.scala b/core/src/main/scala/spark/SparkException.scala
index aa7a16d7dd..b7045eea63 100644
--- a/core/src/main/scala/spark/SparkException.scala
+++ b/core/src/main/scala/spark/SparkException.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 class SparkException(message: String, cause: Throwable)
diff --git a/core/src/main/scala/spark/SparkFiles.java b/core/src/main/scala/spark/SparkFiles.java
index 566aec622c..f9b3f7965e 100644
--- a/core/src/main/scala/spark/SparkFiles.java
+++ b/core/src/main/scala/spark/SparkFiles.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark;
 
 import java.io.File;
diff --git a/core/src/main/scala/spark/TaskContext.scala b/core/src/main/scala/spark/TaskContext.scala
index dd0609026a..b79f4ca813 100644
--- a/core/src/main/scala/spark/TaskContext.scala
+++ b/core/src/main/scala/spark/TaskContext.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import executor.TaskMetrics
diff --git a/core/src/main/scala/spark/TaskEndReason.scala b/core/src/main/scala/spark/TaskEndReason.scala
index 8140cba084..3ad665da34 100644
--- a/core/src/main/scala/spark/TaskEndReason.scala
+++ b/core/src/main/scala/spark/TaskEndReason.scala
@@ -1,5 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
+import spark.executor.TaskMetrics
 import spark.storage.BlockManagerId
 
 /**
@@ -24,7 +42,8 @@ private[spark] case class FetchFailed(
 private[spark] case class ExceptionFailure(
     className: String,
     description: String,
-    stackTrace: Array[StackTraceElement])
+    stackTrace: Array[StackTraceElement],
+    metrics: Option[TaskMetrics])
   extends TaskEndReason
 
 private[spark] case class OtherFailure(message: String) extends TaskEndReason
diff --git a/core/src/main/scala/spark/TaskState.scala b/core/src/main/scala/spark/TaskState.scala
index 78eb33a628..9df7d8277b 100644
--- a/core/src/main/scala/spark/TaskState.scala
+++ b/core/src/main/scala/spark/TaskState.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import org.apache.mesos.Protos.{TaskState => MesosTaskState}
diff --git a/core/src/main/scala/spark/Utils.scala b/core/src/main/scala/spark/Utils.scala
index 645c18541e..e6a96a5ec1 100644
--- a/core/src/main/scala/spark/Utils.scala
+++ b/core/src/main/scala/spark/Utils.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark
 
 import java.io._
@@ -6,6 +23,7 @@ import java.util.{Locale, Random, UUID}
 import java.util.concurrent.{ConcurrentHashMap, Executors, ThreadFactory, ThreadPoolExecutor}
 import java.util.regex.Pattern
 
+import scala.collection.Map
 import scala.collection.mutable.{ArrayBuffer, HashMap}
 import scala.collection.JavaConversions._
 import scala.io.Source
@@ -486,6 +504,26 @@ private object Utils extends Logging {
   }
 
   /**
+   * Returns a human-readable string representing a duration such as "35ms"
+   */
+  def msDurationToString(ms: Long): String = {
+    val second = 1000
+    val minute = 60 * second
+    val hour = 60 * minute
+
+    ms match {
+      case t if t < second =>
+        "%d ms".format(t)
+      case t if t < minute =>
+        "%.1f s".format(t.toFloat / second)
+      case t if t < hour =>
+        "%.1f m".format(t.toFloat / minute)
+      case t =>
+        "%.2f h".format(t.toFloat / hour)
+    }
+  }
+
+  /**
    * Convert a memory quantity in megabytes to a human-readable string such as "4.0 MB".
    */
   def memoryMegabytesToString(megabytes: Long): String = {
@@ -522,13 +560,57 @@ private object Utils extends Logging {
     execute(command, new File("."))
   }
 
+  /**
+   * Execute a command and get its output, throwing an exception if it yields a code other than 0.
+   */
+  def executeAndGetOutput(command: Seq[String], workingDir: File = new File("."),
+                          extraEnvironment: Map[String, String] = Map.empty): String = {
+    val builder = new ProcessBuilder(command: _*)
+        .directory(workingDir)
+    val environment = builder.environment()
+    for ((key, value) <- extraEnvironment) {
+      environment.put(key, value)
+    }
+    val process = builder.start()
+    new Thread("read stderr for " + command(0)) {
+      override def run() {
+        for (line <- Source.fromInputStream(process.getErrorStream).getLines) {
+          System.err.println(line)
+        }
+      }
+    }.start()
+    val output = new StringBuffer
+    val stdoutThread = new Thread("read stdout for " + command(0)) {
+      override def run() {
+        for (line <- Source.fromInputStream(process.getInputStream).getLines) {
+          output.append(line)
+        }
+      }
+    }
+    stdoutThread.start()
+    val exitCode = process.waitFor()
+    stdoutThread.join()   // Wait for it to finish reading output
+    if (exitCode != 0) {
+      throw new SparkException("Process " + command + " exited with code " + exitCode)
+    }
+    output.toString
+  }
+
+  /** 
+   * A regular expression to match classes of the "core" Spark API that we want to skip when
+   * finding the call site of a method.
+   */
+  private val SPARK_CLASS_REGEX = """^spark(\.api\.java)?(\.rdd)?\.[A-Z]""".r
+
+  private[spark] class CallSiteInfo(val lastSparkMethod: String, val firstUserFile: String,
+                                    val firstUserLine: Int, val firstUserClass: String)
 
   /**
    * When called inside a class in the spark package, returns the name of the user code class
    * (outside the spark package) that called into Spark, as well as which Spark method they called.
    * This is used, for example, to tell users where in their code each RDD got created.
    */
-  def getSparkCallSite: String = {
+  def getCallSiteInfo: CallSiteInfo = {
     val trace = Thread.currentThread.getStackTrace().filter( el =>
       (!el.getMethodName.contains("getStackTrace")))
 
@@ -540,10 +622,11 @@ private object Utils extends Logging {
     var firstUserFile = "<unknown>"
     var firstUserLine = 0
     var finished = false
+    var firstUserClass = "<unknown>"
 
     for (el <- trace) {
       if (!finished) {
-        if (el.getClassName.startsWith("spark.") && !el.getClassName.startsWith("spark.examples.")) {
+        if (SPARK_CLASS_REGEX.findFirstIn(el.getClassName) != None) {
           lastSparkMethod = if (el.getMethodName == "<init>") {
             // Spark method is a constructor; get its class name
             el.getClassName.substring(el.getClassName.lastIndexOf('.') + 1)
@@ -554,25 +637,33 @@ private object Utils extends Logging {
         else {
           firstUserLine = el.getLineNumber
           firstUserFile = el.getFileName
+          firstUserClass = el.getClassName
           finished = true
         }
       }
     }
-    "%s at %s:%s".format(lastSparkMethod, firstUserFile, firstUserLine)
+    new CallSiteInfo(lastSparkMethod, firstUserFile, firstUserLine, firstUserClass)
   }
 
-  /**
-   * Try to find a free port to bind to on the local host. This should ideally never be needed,
-   * except that, unfortunately, some of the networking libraries we currently rely on (e.g. Spray)
-   * don't let users bind to port 0 and then figure out which free port they actually bound to.
-   * We work around this by binding a ServerSocket and immediately unbinding it. This is *not*
-   * necessarily guaranteed to work, but it's the best we can do.
-   */
-  def findFreePort(): Int = {
-    val socket = new ServerSocket(0)
-    val portBound = socket.getLocalPort
-    socket.close()
-    portBound
+  def formatSparkCallSite = {
+    val callSiteInfo = getCallSiteInfo
+    "%s at %s:%s".format(callSiteInfo.lastSparkMethod, callSiteInfo.firstUserFile,
+                         callSiteInfo.firstUserLine)
+  }
+
+  /** Return a string containing part of a file from byte 'start' to 'end'. */
+  def offsetBytes(path: String, start: Long, end: Long): String = {
+    val file = new File(path)
+    val length = file.length()
+    val effectiveEnd = math.min(length, end)
+    val effectiveStart = math.max(0, start)
+    val buff = new Array[Byte]((effectiveEnd-effectiveStart).toInt)
+    val stream = new FileInputStream(file)
+
+    stream.skip(effectiveStart)
+    stream.read(buff)
+    stream.close()
+    Source.fromBytes(buff).mkString
   }
 
   /**
@@ -602,4 +693,67 @@ private object Utils extends Logging {
     }
     return false
   }
+
+  def isSpace(c: Char): Boolean = {
+    " \t\r\n".indexOf(c) != -1
+  }
+
+  /**
+   * Split a string of potentially quoted arguments from the command line the way that a shell
+   * would do it to determine arguments to a command. For example, if the string is 'a "b c" d',
+   * then it would be parsed as three arguments: 'a', 'b c' and 'd'.
+   */
+  def splitCommandString(s: String): Seq[String] = {
+    val buf = new ArrayBuffer[String]
+    var inWord = false
+    var inSingleQuote = false
+    var inDoubleQuote = false
+    var curWord = new StringBuilder
+    def endWord() {
+      buf += curWord.toString
+      curWord.clear()
+    }
+    var i = 0
+    while (i < s.length) {
+      var nextChar = s.charAt(i)
+      if (inDoubleQuote) {
+        if (nextChar == '"') {
+          inDoubleQuote = false
+        } else if (nextChar == '\\') {
+          if (i < s.length - 1) {
+            // Append the next character directly, because only " and \ may be escaped in
+            // double quotes after the shell's own expansion
+            curWord.append(s.charAt(i + 1))
+            i += 1
+          }
+        } else {
+          curWord.append(nextChar)
+        }
+      } else if (inSingleQuote) {
+        if (nextChar == '\'') {
+          inSingleQuote = false
+        } else {
+          curWord.append(nextChar)
+        }
+        // Backslashes are not treated specially in single quotes
+      } else if (nextChar == '"') {
+        inWord = true
+        inDoubleQuote = true
+      } else if (nextChar == '\'') {
+        inWord = true
+        inSingleQuote = true
+      } else if (!isSpace(nextChar)) {
+        curWord.append(nextChar)
+        inWord = true
+      } else if (inWord && isSpace(nextChar)) {
+        endWord()
+        inWord = false
+      }
+      i += 1
+    }
+    if (inWord || inDoubleQuote || inSingleQuote) {
+      endWord()
+    }
+    return buf
+  }
 }
diff --git a/core/src/main/scala/spark/api/java/JavaDoubleRDD.scala b/core/src/main/scala/spark/api/java/JavaDoubleRDD.scala
index 16692c0440..392556f261 100644
--- a/core/src/main/scala/spark/api/java/JavaDoubleRDD.scala
+++ b/core/src/main/scala/spark/api/java/JavaDoubleRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java
 
 import spark.RDD
diff --git a/core/src/main/scala/spark/api/java/JavaPairRDD.scala b/core/src/main/scala/spark/api/java/JavaPairRDD.scala
index 76051597b6..ccc511dc5f 100644
--- a/core/src/main/scala/spark/api/java/JavaPairRDD.scala
+++ b/core/src/main/scala/spark/api/java/JavaPairRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java
 
 import java.util.{List => JList}
diff --git a/core/src/main/scala/spark/api/java/JavaRDD.scala b/core/src/main/scala/spark/api/java/JavaRDD.scala
index 626b499454..c0bf2cf568 100644
--- a/core/src/main/scala/spark/api/java/JavaRDD.scala
+++ b/core/src/main/scala/spark/api/java/JavaRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java
 
 import spark._
diff --git a/core/src/main/scala/spark/api/java/JavaRDDLike.scala b/core/src/main/scala/spark/api/java/JavaRDDLike.scala
index b555f2030a..21b5abf053 100644
--- a/core/src/main/scala/spark/api/java/JavaRDDLike.scala
+++ b/core/src/main/scala/spark/api/java/JavaRDDLike.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java
 
 import java.util.{List => JList, Comparator}
@@ -384,4 +401,29 @@ trait JavaRDDLike[T, This <: JavaRDDLike[T, This]] extends Serializable {
     val comp = com.google.common.collect.Ordering.natural().asInstanceOf[Comparator[T]]
     top(num, comp)
   }
+
+  /**
+   * Returns the first K elements from this RDD as defined by
+   * the specified Comparator[T] and maintains the order.
+   * @param num the number of top elements to return
+   * @param comp the comparator that defines the order
+   * @return an array of top elements
+   */
+  def takeOrdered(num: Int, comp: Comparator[T]): JList[T] = {
+    import scala.collection.JavaConversions._
+    val topElems = rdd.takeOrdered(num)(Ordering.comparatorToOrdering(comp))
+    val arr: java.util.Collection[T] = topElems.toSeq
+    new java.util.ArrayList(arr)
+  }
+
+  /**
+   * Returns the first K elements from this RDD using the
+   * natural ordering for T while maintain the order.
+   * @param num the number of top elements to return
+   * @return an array of top elements
+   */
+  def takeOrdered(num: Int): JList[T] = {
+    val comp = com.google.common.collect.Ordering.natural().asInstanceOf[Comparator[T]]
+    takeOrdered(num, comp)
+  }
 }
diff --git a/core/src/main/scala/spark/api/java/JavaSparkContext.scala b/core/src/main/scala/spark/api/java/JavaSparkContext.scala
index 5f18b1e15b..fe182e7ab6 100644
--- a/core/src/main/scala/spark/api/java/JavaSparkContext.scala
+++ b/core/src/main/scala/spark/api/java/JavaSparkContext.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java
 
 import java.util.{Map => JMap}
diff --git a/core/src/main/scala/spark/api/java/JavaSparkContextVarargsWorkaround.java b/core/src/main/scala/spark/api/java/JavaSparkContextVarargsWorkaround.java
index 97344e73da..42b1de01b1 100644
--- a/core/src/main/scala/spark/api/java/JavaSparkContextVarargsWorkaround.java
+++ b/core/src/main/scala/spark/api/java/JavaSparkContextVarargsWorkaround.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java;
 
 import java.util.Arrays;
diff --git a/core/src/main/scala/spark/api/java/StorageLevels.java b/core/src/main/scala/spark/api/java/StorageLevels.java
index 5e5845ac3a..f385636e83 100644
--- a/core/src/main/scala/spark/api/java/StorageLevels.java
+++ b/core/src/main/scala/spark/api/java/StorageLevels.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java;
 
 import spark.storage.StorageLevel;
diff --git a/core/src/main/scala/spark/api/java/function/DoubleFlatMapFunction.java b/core/src/main/scala/spark/api/java/function/DoubleFlatMapFunction.java
index 3a8192be3a..8bc88d757f 100644
--- a/core/src/main/scala/spark/api/java/function/DoubleFlatMapFunction.java
+++ b/core/src/main/scala/spark/api/java/function/DoubleFlatMapFunction.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function;
 
 
diff --git a/core/src/main/scala/spark/api/java/function/DoubleFunction.java b/core/src/main/scala/spark/api/java/function/DoubleFunction.java
index c6ef76d088..1aa1e5dae0 100644
--- a/core/src/main/scala/spark/api/java/function/DoubleFunction.java
+++ b/core/src/main/scala/spark/api/java/function/DoubleFunction.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function;
 
 
diff --git a/core/src/main/scala/spark/api/java/function/FlatMapFunction.scala b/core/src/main/scala/spark/api/java/function/FlatMapFunction.scala
index e027cdacd3..9eb0cfe3f9 100644
--- a/core/src/main/scala/spark/api/java/function/FlatMapFunction.scala
+++ b/core/src/main/scala/spark/api/java/function/FlatMapFunction.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function
 
 /**
diff --git a/core/src/main/scala/spark/api/java/function/FlatMapFunction2.scala b/core/src/main/scala/spark/api/java/function/FlatMapFunction2.scala
index 6044043add..dda98710c2 100644
--- a/core/src/main/scala/spark/api/java/function/FlatMapFunction2.scala
+++ b/core/src/main/scala/spark/api/java/function/FlatMapFunction2.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function
 
 /**
diff --git a/core/src/main/scala/spark/api/java/function/Function.java b/core/src/main/scala/spark/api/java/function/Function.java
index dae8295f21..2a2ea0aacf 100644
--- a/core/src/main/scala/spark/api/java/function/Function.java
+++ b/core/src/main/scala/spark/api/java/function/Function.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function;
 
 import scala.reflect.ClassManifest;
diff --git a/core/src/main/scala/spark/api/java/function/Function2.java b/core/src/main/scala/spark/api/java/function/Function2.java
index 69bf12c8c9..952d31ece4 100644
--- a/core/src/main/scala/spark/api/java/function/Function2.java
+++ b/core/src/main/scala/spark/api/java/function/Function2.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function;
 
 import scala.reflect.ClassManifest;
diff --git a/core/src/main/scala/spark/api/java/function/PairFlatMapFunction.java b/core/src/main/scala/spark/api/java/function/PairFlatMapFunction.java
index b3cc4df6aa..4aad602da3 100644
--- a/core/src/main/scala/spark/api/java/function/PairFlatMapFunction.java
+++ b/core/src/main/scala/spark/api/java/function/PairFlatMapFunction.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function;
 
 import scala.Tuple2;
diff --git a/core/src/main/scala/spark/api/java/function/PairFunction.java b/core/src/main/scala/spark/api/java/function/PairFunction.java
index 9fc6df4b88..ccfe64ecf1 100644
--- a/core/src/main/scala/spark/api/java/function/PairFunction.java
+++ b/core/src/main/scala/spark/api/java/function/PairFunction.java
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function;
 
 import scala.Tuple2;
diff --git a/core/src/main/scala/spark/api/java/function/VoidFunction.scala b/core/src/main/scala/spark/api/java/function/VoidFunction.scala
index b0096cf2bf..f6fc0b0f7d 100644
--- a/core/src/main/scala/spark/api/java/function/VoidFunction.scala
+++ b/core/src/main/scala/spark/api/java/function/VoidFunction.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function
 
 /**
@@ -13,4 +30,4 @@ abstract class VoidFunction[T] extends Serializable {
 // return Unit), so it is implicitly converted to a Function1[T, Unit]:
 object VoidFunction {
   implicit def toFunction[T](f: VoidFunction[T]) : Function1[T, Unit] = ((x : T) => f.call(x))
-}
-\ No newline at end of file
+}
diff --git a/core/src/main/scala/spark/api/java/function/WrappedFunction1.scala b/core/src/main/scala/spark/api/java/function/WrappedFunction1.scala
index 923f5cdf4f..1758a38c4e 100644
--- a/core/src/main/scala/spark/api/java/function/WrappedFunction1.scala
+++ b/core/src/main/scala/spark/api/java/function/WrappedFunction1.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function
 
 import scala.runtime.AbstractFunction1
diff --git a/core/src/main/scala/spark/api/java/function/WrappedFunction2.scala b/core/src/main/scala/spark/api/java/function/WrappedFunction2.scala
index 2c6e9b1571..b093567d2c 100644
--- a/core/src/main/scala/spark/api/java/function/WrappedFunction2.scala
+++ b/core/src/main/scala/spark/api/java/function/WrappedFunction2.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.java.function
 
 import scala.runtime.AbstractFunction2
diff --git a/core/src/main/scala/spark/api/python/PythonPartitioner.scala b/core/src/main/scala/spark/api/python/PythonPartitioner.scala
index d618c098c2..31a719fbff 100644
--- a/core/src/main/scala/spark/api/python/PythonPartitioner.scala
+++ b/core/src/main/scala/spark/api/python/PythonPartitioner.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.python
 
 import spark.Partitioner
diff --git a/core/src/main/scala/spark/api/python/PythonRDD.scala b/core/src/main/scala/spark/api/python/PythonRDD.scala
index 63140cf37f..af10822dbd 100644
--- a/core/src/main/scala/spark/api/python/PythonRDD.scala
+++ b/core/src/main/scala/spark/api/python/PythonRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.python
 
 import java.io._
@@ -22,6 +39,8 @@ private[spark] class PythonRDD[T: ClassManifest](
     accumulator: Accumulator[JList[Array[Byte]]])
   extends RDD[Array[Byte]](parent) {
 
+  val bufferSize = System.getProperty("spark.buffer.size", "65536").toInt
+
   // Similar to Runtime.exec(), if we are given a single string, split it into words
   // using a standard StringTokenizer (i.e. by spaces)
   def this(parent: RDD[T], command: String, envVars: JMap[String, String],
@@ -45,37 +64,38 @@ private[spark] class PythonRDD[T: ClassManifest](
     new Thread("stdin writer for " + pythonExec) {
       override def run() {
         SparkEnv.set(env)
-        val out = new PrintWriter(worker.getOutputStream)
-        val dOut = new DataOutputStream(worker.getOutputStream)
+        val stream = new BufferedOutputStream(worker.getOutputStream, bufferSize)
+        val dataOut = new DataOutputStream(stream)
+        val printOut = new PrintWriter(stream)
         // Partition index
-        dOut.writeInt(split.index)
+        dataOut.writeInt(split.index)
         // sparkFilesDir
-        PythonRDD.writeAsPickle(SparkFiles.getRootDirectory, dOut)
+        PythonRDD.writeAsPickle(SparkFiles.getRootDirectory, dataOut)
         // Broadcast variables
-        dOut.writeInt(broadcastVars.length)
+        dataOut.writeInt(broadcastVars.length)
         for (broadcast <- broadcastVars) {
-          dOut.writeLong(broadcast.id)
-          dOut.writeInt(broadcast.value.length)
-          dOut.write(broadcast.value)
-          dOut.flush()
+          dataOut.writeLong(broadcast.id)
+          dataOut.writeInt(broadcast.value.length)
+          dataOut.write(broadcast.value)
         }
+        dataOut.flush()
         // Serialized user code
         for (elem <- command) {
-          out.println(elem)
+          printOut.println(elem)
         }
-        out.flush()
+        printOut.flush()
         // Data values
         for (elem <- parent.iterator(split, context)) {
-          PythonRDD.writeAsPickle(elem, dOut)
+          PythonRDD.writeAsPickle(elem, dataOut)
         }
-        dOut.flush()
-        out.flush()
+        dataOut.flush()
+        printOut.flush()
         worker.shutdownOutput()
       }
     }.start()
 
     // Return an iterator that read lines from the process's stdout
-    val stream = new DataInputStream(worker.getInputStream)
+    val stream = new DataInputStream(new BufferedInputStream(worker.getInputStream, bufferSize))
     return new Iterator[Array[Byte]] {
       def next(): Array[Byte] = {
         val obj = _nextObj
@@ -275,6 +295,8 @@ class PythonAccumulatorParam(@transient serverHost: String, serverPort: Int)
   extends AccumulatorParam[JList[Array[Byte]]] {
 
   Utils.checkHost(serverHost, "Expected hostname")
+
+  val bufferSize = System.getProperty("spark.buffer.size", "65536").toInt
   
   override def zero(value: JList[Array[Byte]]): JList[Array[Byte]] = new JArrayList
 
@@ -288,7 +310,7 @@ class PythonAccumulatorParam(@transient serverHost: String, serverPort: Int)
       // This happens on the master, where we pass the updates to Python through a socket
       val socket = new Socket(serverHost, serverPort)
       val in = socket.getInputStream
-      val out = new DataOutputStream(socket.getOutputStream)
+      val out = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream, bufferSize))
       out.writeInt(val2.size)
       for (array <- val2) {
         out.writeInt(array.length)
diff --git a/core/src/main/scala/spark/api/python/PythonWorkerFactory.scala b/core/src/main/scala/spark/api/python/PythonWorkerFactory.scala
index 8844411d73..078ad45ce8 100644
--- a/core/src/main/scala/spark/api/python/PythonWorkerFactory.scala
+++ b/core/src/main/scala/spark/api/python/PythonWorkerFactory.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.api.python
 
 import java.io.{DataInputStream, IOException}
@@ -51,7 +68,6 @@ private[spark] class PythonWorkerFactory(pythonExec: String, envVars: Map[String
         val workerEnv = pb.environment()
         workerEnv.putAll(envVars)
         daemon = pb.start()
-        daemonPort = new DataInputStream(daemon.getInputStream).readInt()
 
         // Redirect the stderr to ours
         new Thread("stderr reader for " + pythonExec) {
@@ -69,6 +85,25 @@ private[spark] class PythonWorkerFactory(pythonExec: String, envVars: Map[String
             }
           }
         }.start()
+
+        val in = new DataInputStream(daemon.getInputStream)
+        daemonPort = in.readInt()
+
+        // Redirect further stdout output to our stderr
+        new Thread("stdout reader for " + pythonExec) {
+          override def run() {
+            scala.util.control.Exception.ignoring(classOf[IOException]) {
+              // FIXME HACK: We copy the stream on the level of bytes to
+              // attempt to dodge encoding problems.
+              var buf = new Array[Byte](1024)
+              var len = in.read(buf)
+              while (len != -1) {
+                System.err.write(buf, 0, len)
+                len = in.read(buf)
+              }
+            }
+          }
+        }.start()
       } catch {
         case e => {
           stopDaemon()
diff --git a/core/src/main/scala/spark/broadcast/BitTorrentBroadcast.scala b/core/src/main/scala/spark/broadcast/BitTorrentBroadcast.scala
index adcb2d2415..6f7d385379 100644
--- a/core/src/main/scala/spark/broadcast/BitTorrentBroadcast.scala
+++ b/core/src/main/scala/spark/broadcast/BitTorrentBroadcast.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.broadcast
 
 import java.io._
diff --git a/core/src/main/scala/spark/broadcast/Broadcast.scala b/core/src/main/scala/spark/broadcast/Broadcast.scala
index 415bde5d67..aba56a60ca 100644
--- a/core/src/main/scala/spark/broadcast/Broadcast.scala
+++ b/core/src/main/scala/spark/broadcast/Broadcast.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.broadcast
 
 import java.io._
diff --git a/core/src/main/scala/spark/broadcast/BroadcastFactory.scala b/core/src/main/scala/spark/broadcast/BroadcastFactory.scala
index 5c6184c3c7..d33d95c7d9 100644
--- a/core/src/main/scala/spark/broadcast/BroadcastFactory.scala
+++ b/core/src/main/scala/spark/broadcast/BroadcastFactory.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.broadcast
 
 /**
diff --git a/core/src/main/scala/spark/broadcast/HttpBroadcast.scala b/core/src/main/scala/spark/broadcast/HttpBroadcast.scala
index 7e30b8f7d2..c565876950 100644
--- a/core/src/main/scala/spark/broadcast/HttpBroadcast.scala
+++ b/core/src/main/scala/spark/broadcast/HttpBroadcast.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.broadcast
 
 import com.ning.compress.lzf.{LZFInputStream, LZFOutputStream}
diff --git a/core/src/main/scala/spark/broadcast/MultiTracker.scala b/core/src/main/scala/spark/broadcast/MultiTracker.scala
index 3fd77af73f..7855d44e9b 100644
--- a/core/src/main/scala/spark/broadcast/MultiTracker.scala
+++ b/core/src/main/scala/spark/broadcast/MultiTracker.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.broadcast
 
 import java.io._
diff --git a/core/src/main/scala/spark/broadcast/SourceInfo.scala b/core/src/main/scala/spark/broadcast/SourceInfo.scala
index c79bb93c38..b17ae63b5c 100644
--- a/core/src/main/scala/spark/broadcast/SourceInfo.scala
+++ b/core/src/main/scala/spark/broadcast/SourceInfo.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.broadcast
 
 import java.util.BitSet
diff --git a/core/src/main/scala/spark/broadcast/TreeBroadcast.scala b/core/src/main/scala/spark/broadcast/TreeBroadcast.scala
index c55c476117..ea1e9a12c1 100644
--- a/core/src/main/scala/spark/broadcast/TreeBroadcast.scala
+++ b/core/src/main/scala/spark/broadcast/TreeBroadcast.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.broadcast
 
 import java.io._
diff --git a/core/src/main/scala/spark/deploy/ApplicationDescription.scala b/core/src/main/scala/spark/deploy/ApplicationDescription.scala
index 02193c7008..a8b22fbef8 100644
--- a/core/src/main/scala/spark/deploy/ApplicationDescription.scala
+++ b/core/src/main/scala/spark/deploy/ApplicationDescription.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy
 
 private[spark] class ApplicationDescription(
diff --git a/core/src/main/scala/spark/deploy/Command.scala b/core/src/main/scala/spark/deploy/Command.scala
index 577101e3c3..bad629e965 100644
--- a/core/src/main/scala/spark/deploy/Command.scala
+++ b/core/src/main/scala/spark/deploy/Command.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy
 
 import scala.collection.Map
diff --git a/core/src/main/scala/spark/deploy/DeployMessage.scala b/core/src/main/scala/spark/deploy/DeployMessage.scala
index 51274acb1e..e1f8aff6f5 100644
--- a/core/src/main/scala/spark/deploy/DeployMessage.scala
+++ b/core/src/main/scala/spark/deploy/DeployMessage.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy
 
 import spark.deploy.ExecutorState.ExecutorState
diff --git a/core/src/main/scala/spark/deploy/ExecutorState.scala b/core/src/main/scala/spark/deploy/ExecutorState.scala
index 5dc0c54552..08c9a3b725 100644
--- a/core/src/main/scala/spark/deploy/ExecutorState.scala
+++ b/core/src/main/scala/spark/deploy/ExecutorState.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy
 
 private[spark] object ExecutorState
diff --git a/core/src/main/scala/spark/deploy/JsonProtocol.scala b/core/src/main/scala/spark/deploy/JsonProtocol.scala
index ea832101d2..64f89623e1 100644
--- a/core/src/main/scala/spark/deploy/JsonProtocol.scala
+++ b/core/src/main/scala/spark/deploy/JsonProtocol.scala
@@ -1,79 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy
 
 import master.{ApplicationInfo, WorkerInfo}
+import net.liftweb.json.JsonDSL._
 import worker.ExecutorRunner
-import cc.spray.json._
 
-/**
- * spray-json helper class containing implicit conversion to json for marshalling responses
- */
-private[spark] object JsonProtocol extends DefaultJsonProtocol {
-  implicit object WorkerInfoJsonFormat extends RootJsonWriter[WorkerInfo] {
-    def write(obj: WorkerInfo) = JsObject(
-      "id" -> JsString(obj.id),
-      "host" -> JsString(obj.host),
-      "port" -> JsNumber(obj.port),
-      "webuiaddress" -> JsString(obj.webUiAddress),
-      "cores" -> JsNumber(obj.cores),
-      "coresused" -> JsNumber(obj.coresUsed),
-      "memory" -> JsNumber(obj.memory),
-      "memoryused" -> JsNumber(obj.memoryUsed)
-    )
-  }
+private[spark] object JsonProtocol {
+ def writeWorkerInfo(obj: WorkerInfo) = {
+   ("id" -> obj.id) ~
+   ("host" -> obj.host) ~
+   ("port" -> obj.port) ~
+   ("webuiaddress" -> obj.webUiAddress) ~
+   ("cores" -> obj.cores) ~
+   ("coresused" -> obj.coresUsed) ~
+   ("memory" -> obj.memory) ~
+   ("memoryused" -> obj.memoryUsed)
+ }
 
-  implicit object AppInfoJsonFormat extends RootJsonWriter[ApplicationInfo] {
-    def write(obj: ApplicationInfo) = JsObject(
-      "starttime" -> JsNumber(obj.startTime),
-      "id" -> JsString(obj.id),
-      "name" -> JsString(obj.desc.name),
-      "cores" -> JsNumber(obj.desc.maxCores),
-      "user" -> JsString(obj.desc.user),
-      "memoryperslave" -> JsNumber(obj.desc.memoryPerSlave),
-      "submitdate" -> JsString(obj.submitDate.toString))
+  def writeApplicationInfo(obj: ApplicationInfo) = {
+    ("starttime" -> obj.startTime) ~
+    ("id" -> obj.id) ~
+    ("name" -> obj.desc.name) ~
+    ("cores" -> obj.desc.maxCores) ~
+    ("user" ->  obj.desc.user) ~
+    ("memoryperslave" -> obj.desc.memoryPerSlave) ~
+    ("submitdate" -> obj.submitDate.toString)
   }
 
-  implicit object AppDescriptionJsonFormat extends RootJsonWriter[ApplicationDescription] {
-    def write(obj: ApplicationDescription) = JsObject(
-      "name" -> JsString(obj.name),
-      "cores" -> JsNumber(obj.maxCores),
-      "memoryperslave" -> JsNumber(obj.memoryPerSlave),
-      "user" -> JsString(obj.user)
-    )
+  def writeApplicationDescription(obj: ApplicationDescription) = {
+    ("name" -> obj.name) ~
+    ("cores" -> obj.maxCores) ~
+    ("memoryperslave" -> obj.memoryPerSlave) ~
+    ("user" -> obj.user)
   }
 
-  implicit object ExecutorRunnerJsonFormat extends RootJsonWriter[ExecutorRunner] {
-    def write(obj: ExecutorRunner) = JsObject(
-      "id" -> JsNumber(obj.execId),
-      "memory" -> JsNumber(obj.memory),
-      "appid" -> JsString(obj.appId),
-      "appdesc" -> obj.appDesc.toJson.asJsObject
-    )
+  def writeExecutorRunner(obj: ExecutorRunner) = {
+    ("id" -> obj.execId) ~
+    ("memory" -> obj.memory) ~
+    ("appid" -> obj.appId) ~
+    ("appdesc" -> writeApplicationDescription(obj.appDesc))
   }
 
-  implicit object MasterStateJsonFormat extends RootJsonWriter[MasterState] {
-    def write(obj: MasterState) = JsObject(
-      "url" -> JsString("spark://" + obj.uri),
-      "workers" -> JsArray(obj.workers.toList.map(_.toJson)),
-      "cores" -> JsNumber(obj.workers.map(_.cores).sum),
-      "coresused" -> JsNumber(obj.workers.map(_.coresUsed).sum),
-      "memory" -> JsNumber(obj.workers.map(_.memory).sum),
-      "memoryused" -> JsNumber(obj.workers.map(_.memoryUsed).sum),
-      "activeapps" -> JsArray(obj.activeApps.toList.map(_.toJson)),
-      "completedapps" -> JsArray(obj.completedApps.toList.map(_.toJson))
-    )
+  def writeMasterState(obj: MasterState) = {
+    ("url" -> ("spark://" + obj.uri)) ~
+    ("workers" -> obj.workers.toList.map(writeWorkerInfo)) ~
+    ("cores" -> obj.workers.map(_.cores).sum) ~
+    ("coresused" -> obj.workers.map(_.coresUsed).sum) ~
+    ("memory" -> obj.workers.map(_.memory).sum) ~
+    ("memoryused" -> obj.workers.map(_.memoryUsed).sum) ~
+    ("activeapps" -> obj.activeApps.toList.map(writeApplicationInfo)) ~
+    ("completedapps" -> obj.completedApps.toList.map(writeApplicationInfo))
   }
 
-  implicit object WorkerStateJsonFormat extends RootJsonWriter[WorkerState] {
-    def write(obj: WorkerState) = JsObject(
-      "id" -> JsString(obj.workerId),
-      "masterurl" -> JsString(obj.masterUrl),
-      "masterwebuiurl" -> JsString(obj.masterWebUiUrl),
-      "cores" -> JsNumber(obj.cores),
-      "coresused" -> JsNumber(obj.coresUsed),
-      "memory" -> JsNumber(obj.memory),
-      "memoryused" -> JsNumber(obj.memoryUsed),
-      "executors" -> JsArray(obj.executors.toList.map(_.toJson)),
-      "finishedexecutors" -> JsArray(obj.finishedExecutors.toList.map(_.toJson))
-    )
+  def writeWorkerState(obj: WorkerState) = {
+    ("id" -> obj.workerId) ~
+    ("masterurl" -> obj.masterUrl) ~
+    ("masterwebuiurl" -> obj.masterWebUiUrl) ~
+    ("cores" -> obj.cores) ~
+    ("coresused" -> obj.coresUsed) ~
+    ("memory" -> obj.memory) ~
+    ("memoryused" -> obj.memoryUsed) ~
+    ("executors" -> obj.executors.toList.map(writeExecutorRunner)) ~
+    ("finishedexecutors" -> obj.finishedExecutors.toList.map(writeExecutorRunner))
   }
 }
diff --git a/core/src/main/scala/spark/deploy/LocalSparkCluster.scala b/core/src/main/scala/spark/deploy/LocalSparkCluster.scala
index 55bb61b0cc..6b8e9f27af 100644
--- a/core/src/main/scala/spark/deploy/LocalSparkCluster.scala
+++ b/core/src/main/scala/spark/deploy/LocalSparkCluster.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy
 
 import akka.actor.{ActorRef, Props, Actor, ActorSystem, Terminated}
@@ -45,6 +62,7 @@ class LocalSparkCluster(numWorkers: Int, coresPerWorker: Int, memoryPerWorker: I
     // Stop the workers before the master so they don't get upset that it disconnected
     workerActorSystems.foreach(_.shutdown())
     workerActorSystems.foreach(_.awaitTermination())
+
     masterActorSystems.foreach(_.shutdown())
     masterActorSystems.foreach(_.awaitTermination())
   }
diff --git a/core/src/main/scala/spark/deploy/WebUI.scala b/core/src/main/scala/spark/deploy/WebUI.scala
index ad1a1092b2..8ea7792ef4 100644
--- a/core/src/main/scala/spark/deploy/WebUI.scala
+++ b/core/src/main/scala/spark/deploy/WebUI.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy
 
 import java.text.SimpleDateFormat
@@ -6,7 +23,7 @@ import java.util.Date
 /**
  * Utilities used throughout the web UI.
  */
-private[spark] object WebUI {
+private[spark] object DeployWebUI {
   val DATE_FORMAT = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss")
 
   def formatDate(date: Date): String = DATE_FORMAT.format(date)
diff --git a/core/src/main/scala/spark/deploy/client/Client.scala b/core/src/main/scala/spark/deploy/client/Client.scala
index 4af44f9c16..edefa0292d 100644
--- a/core/src/main/scala/spark/deploy/client/Client.scala
+++ b/core/src/main/scala/spark/deploy/client/Client.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.client
 
 import spark.deploy._
diff --git a/core/src/main/scala/spark/deploy/client/ClientListener.scala b/core/src/main/scala/spark/deploy/client/ClientListener.scala
index e8c4083f9d..064024455e 100644
--- a/core/src/main/scala/spark/deploy/client/ClientListener.scala
+++ b/core/src/main/scala/spark/deploy/client/ClientListener.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.client
 
 /**
diff --git a/core/src/main/scala/spark/deploy/client/TestClient.scala b/core/src/main/scala/spark/deploy/client/TestClient.scala
index f195082808..4f4daa141a 100644
--- a/core/src/main/scala/spark/deploy/client/TestClient.scala
+++ b/core/src/main/scala/spark/deploy/client/TestClient.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.client
 
 import spark.util.AkkaUtils
diff --git a/core/src/main/scala/spark/deploy/client/TestExecutor.scala b/core/src/main/scala/spark/deploy/client/TestExecutor.scala
index 0e46db2272..8a22b6b89f 100644
--- a/core/src/main/scala/spark/deploy/client/TestExecutor.scala
+++ b/core/src/main/scala/spark/deploy/client/TestExecutor.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.client
 
 private[spark] object TestExecutor {
diff --git a/core/src/main/scala/spark/deploy/master/ApplicationInfo.scala b/core/src/main/scala/spark/deploy/master/ApplicationInfo.scala
index 785c16e2be..15ff919738 100644
--- a/core/src/main/scala/spark/deploy/master/ApplicationInfo.scala
+++ b/core/src/main/scala/spark/deploy/master/ApplicationInfo.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.master
 
 import spark.deploy.ApplicationDescription
diff --git a/core/src/main/scala/spark/deploy/master/ApplicationState.scala b/core/src/main/scala/spark/deploy/master/ApplicationState.scala
index 15016b388d..94f0ad8bae 100644
--- a/core/src/main/scala/spark/deploy/master/ApplicationState.scala
+++ b/core/src/main/scala/spark/deploy/master/ApplicationState.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.master
 
 private[spark] object ApplicationState
diff --git a/core/src/main/scala/spark/deploy/master/ExecutorInfo.scala b/core/src/main/scala/spark/deploy/master/ExecutorInfo.scala
index 48e6055fb5..99b60f7d09 100644
--- a/core/src/main/scala/spark/deploy/master/ExecutorInfo.scala
+++ b/core/src/main/scala/spark/deploy/master/ExecutorInfo.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.master
 
 import spark.deploy.ExecutorState
diff --git a/core/src/main/scala/spark/deploy/master/Master.scala b/core/src/main/scala/spark/deploy/master/Master.scala
index 3e965e82ac..e5a7a87e2e 100644
--- a/core/src/main/scala/spark/deploy/master/Master.scala
+++ b/core/src/main/scala/spark/deploy/master/Master.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.master
 
 import akka.actor._
@@ -13,6 +30,7 @@ import scala.collection.mutable.{ArrayBuffer, HashMap, HashSet}
 import spark.deploy._
 import spark.{Logging, SparkException, Utils}
 import spark.util.AkkaUtils
+import ui.MasterWebUI
 
 
 private[spark] class Master(host: String, port: Int, webUiPort: Int) extends Actor with Logging {
@@ -35,6 +53,8 @@ private[spark] class Master(host: String, port: Int, webUiPort: Int) extends Act
 
   var firstApp: Option[ApplicationInfo] = None
 
+  val webUi = new MasterWebUI(self)
+
   Utils.checkHost(host, "Expected hostname")
 
   val masterPublicAddress = {
@@ -51,19 +71,12 @@ private[spark] class Master(host: String, port: Int, webUiPort: Int) extends Act
     logInfo("Starting Spark master at spark://" + host + ":" + port)
     // Listen for remote client disconnection events, since they don't go through Akka's watch()
     context.system.eventStream.subscribe(self, classOf[RemoteClientLifeCycleEvent])
-    startWebUi()
+    webUi.start()
     context.system.scheduler.schedule(0 millis, WORKER_TIMEOUT millis)(timeOutDeadWorkers())
   }
 
-  def startWebUi() {
-    val webUi = new MasterWebUI(context.system, self)
-    try {
-      AkkaUtils.startSprayServer(context.system, "0.0.0.0", webUiPort, webUi.handler)
-    } catch {
-      case e: Exception =>
-        logError("Failed to create web UI", e)
-        System.exit(1)
-    }
+  override def postStop() {
+    webUi.stop()
   }
 
   override def receive = {
@@ -75,7 +88,7 @@ private[spark] class Master(host: String, port: Int, webUiPort: Int) extends Act
       } else {
         addWorker(id, host, workerPort, cores, memory, worker_webUiPort, publicAddress)
         context.watch(sender)  // This doesn't work with remote actors but helps for testing
-        sender ! RegisteredWorker("http://" + masterPublicAddress + ":" + webUiPort)
+        sender ! RegisteredWorker("http://" + masterPublicAddress + ":" + webUi.boundPort.get)
         schedule()
       }
     }
@@ -278,7 +291,9 @@ private[spark] class Master(host: String, port: Int, webUiPort: Int) extends Act
         exec.state = ExecutorState.KILLED
       }
       app.markFinished(state)
-      app.driver ! ApplicationRemoved(state.toString)
+      if (state != ApplicationState.FINISHED) {
+        app.driver ! ApplicationRemoved(state.toString)
+      }
       schedule()
     }
   }
diff --git a/core/src/main/scala/spark/deploy/master/MasterArguments.scala b/core/src/main/scala/spark/deploy/master/MasterArguments.scala
index 3d28ecabb4..d0ec3d5ea0 100644
--- a/core/src/main/scala/spark/deploy/master/MasterArguments.scala
+++ b/core/src/main/scala/spark/deploy/master/MasterArguments.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.master
 
 import spark.util.IntParam
diff --git a/core/src/main/scala/spark/deploy/master/MasterWebUI.scala b/core/src/main/scala/spark/deploy/master/MasterWebUI.scala
deleted file mode 100644
index a4e21c8130..0000000000
--- a/core/src/main/scala/spark/deploy/master/MasterWebUI.scala
+++ /dev/null
@@ -1,74 +0,0 @@
-package spark.deploy.master
-
-import akka.actor.{ActorRef, ActorSystem}
-import akka.dispatch.Await
-import akka.pattern.ask
-import akka.util.{Duration, Timeout}
-import akka.util.duration._
-import cc.spray.Directives
-import cc.spray.directives._
-import cc.spray.typeconversion.TwirlSupport._
-import cc.spray.http.MediaTypes
-import cc.spray.typeconversion.SprayJsonSupport._
-
-import spark.deploy._
-import spark.deploy.JsonProtocol._
-
-/**
- * Web UI server for the standalone master.
- */
-private[spark]
-class MasterWebUI(val actorSystem: ActorSystem, master: ActorRef) extends Directives {
-  val RESOURCE_DIR = "spark/deploy/master/webui"
-  val STATIC_RESOURCE_DIR = "spark/deploy/static"
-  
-  implicit val timeout = Timeout(Duration.create(System.getProperty("spark.akka.askTimeout", "10").toLong, "seconds"))
-  
-  val handler = {
-    get {
-      (path("") & parameters('format ?)) {
-        case Some(js) if js.equalsIgnoreCase("json") =>
-          val future = master ? RequestMasterState
-          respondWithMediaType(MediaTypes.`application/json`) { ctx =>
-            ctx.complete(future.mapTo[MasterState])
-          }
-        case _ =>
-          completeWith {
-            val future = master ? RequestMasterState
-            future.map {
-              masterState => spark.deploy.master.html.index.render(masterState.asInstanceOf[MasterState])
-            }
-          }
-      } ~
-      path("app") {
-        parameters("appId", 'format ?) {
-          case (appId, Some(js)) if (js.equalsIgnoreCase("json")) =>
-            val future = master ? RequestMasterState
-            val appInfo = for (masterState <- future.mapTo[MasterState]) yield {
-              masterState.activeApps.find(_.id == appId).getOrElse({
-                masterState.completedApps.find(_.id == appId).getOrElse(null)
-              })
-            }
-            respondWithMediaType(MediaTypes.`application/json`) { ctx =>
-              ctx.complete(appInfo.mapTo[ApplicationInfo])
-            }
-          case (appId, _) =>
-            completeWith {
-              val future = master ? RequestMasterState
-              future.map { state =>
-                val masterState = state.asInstanceOf[MasterState]
-                val app = masterState.activeApps.find(_.id == appId).getOrElse({
-                  masterState.completedApps.find(_.id == appId).getOrElse(null)
-                })
-                spark.deploy.master.html.app_details.render(app)
-              }
-            }
-        }
-      } ~
-      pathPrefix("static") {
-        getFromResourceDirectory(STATIC_RESOURCE_DIR)
-      } ~
-      getFromResourceDirectory(RESOURCE_DIR)
-    }
-  }
-}
diff --git a/core/src/main/scala/spark/deploy/master/WorkerInfo.scala b/core/src/main/scala/spark/deploy/master/WorkerInfo.scala
index 0c08c5f417..4135cfeb28 100644
--- a/core/src/main/scala/spark/deploy/master/WorkerInfo.scala
+++ b/core/src/main/scala/spark/deploy/master/WorkerInfo.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.master
 
 import akka.actor.ActorRef
diff --git a/core/src/main/scala/spark/deploy/master/WorkerState.scala b/core/src/main/scala/spark/deploy/master/WorkerState.scala
index 0bf35014c8..3e50b7748d 100644
--- a/core/src/main/scala/spark/deploy/master/WorkerState.scala
+++ b/core/src/main/scala/spark/deploy/master/WorkerState.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.master
 
 private[spark] object WorkerState extends Enumeration("ALIVE", "DEAD", "DECOMMISSIONED") {
diff --git a/core/src/main/scala/spark/deploy/master/ui/ApplicationPage.scala b/core/src/main/scala/spark/deploy/master/ui/ApplicationPage.scala
new file mode 100644
index 0000000000..32264af393
--- /dev/null
+++ b/core/src/main/scala/spark/deploy/master/ui/ApplicationPage.scala
@@ -0,0 +1,117 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.deploy.master.ui
+
+import akka.dispatch.Await
+import akka.pattern.ask
+import akka.util.duration._
+
+import javax.servlet.http.HttpServletRequest
+
+import net.liftweb.json.JsonAST.JValue
+
+import scala.xml.Node
+
+import spark.deploy.{RequestMasterState, JsonProtocol, MasterState}
+import spark.deploy.master.ExecutorInfo
+import spark.ui.UIUtils
+
+private[spark] class ApplicationPage(parent: MasterWebUI) {
+  val master = parent.master
+  implicit val timeout = parent.timeout
+
+  /** Executor details for a particular application */
+  def renderJson(request: HttpServletRequest): JValue = {
+    val appId = request.getParameter("appId")
+    val stateFuture = (master ? RequestMasterState)(timeout).mapTo[MasterState]
+    val state = Await.result(stateFuture, 30 seconds)
+    val app = state.activeApps.find(_.id == appId).getOrElse({
+      state.completedApps.find(_.id == appId).getOrElse(null)
+    })
+    JsonProtocol.writeApplicationInfo(app)
+  }
+
+  /** Executor details for a particular application */
+  def render(request: HttpServletRequest): Seq[Node] = {
+    val appId = request.getParameter("appId")
+    val stateFuture = (master ? RequestMasterState)(timeout).mapTo[MasterState]
+    val state = Await.result(stateFuture, 30 seconds)
+    val app = state.activeApps.find(_.id == appId).getOrElse({
+      state.completedApps.find(_.id == appId).getOrElse(null)
+    })
+
+    val executorHeaders = Seq("ExecutorID", "Worker", "Cores", "Memory", "State", "Logs")
+    val executors = app.executors.values.toSeq
+    val executorTable = UIUtils.listingTable(executorHeaders, executorRow, executors)
+
+    val content =
+        <hr />
+        <div class="row">
+          <div class="span12">
+            <ul class="unstyled">
+              <li><strong>ID:</strong> {app.id}</li>
+              <li><strong>Description:</strong> {app.desc.name}</li>
+              <li><strong>User:</strong> {app.desc.user}</li>
+              <li><strong>Cores:</strong>
+                {
+                if (app.desc.maxCores == Integer.MAX_VALUE) {
+                  "Unlimited %s granted".format(app.coresGranted)
+                } else {
+                  "%s (%s granted, %s left)".format(
+                    app.desc.maxCores, app.coresGranted, app.coresLeft)
+                }
+                }
+              </li>
+              <li><strong>Memory per Slave:</strong> {app.desc.memoryPerSlave}</li>
+              <li><strong>Submit Date:</strong> {app.submitDate}</li>
+              <li><strong>State:</strong> {app.state}</li>
+              <li><strong><a href={app.appUiUrl}>Application Detail UI</a></strong></li>
+            </ul>
+          </div>
+        </div>
+
+          <hr/>
+
+        <div class="row"> <!-- Executors -->
+          <div class="span12">
+            <h3> Executor Summary </h3>
+            <br/>
+            {executorTable}
+          </div>
+        </div>;
+    UIUtils.basicSparkPage(content, "Application Info: " + app.desc.name)
+  }
+
+  def executorRow(executor: ExecutorInfo): Seq[Node] = {
+    <tr>
+      <td>{executor.id}</td>
+      <td>
+        <a href={executor.worker.webUiAddress}>{executor.worker.id}</a>
+      </td>
+      <td>{executor.cores}</td>
+      <td>{executor.memory}</td>
+      <td>{executor.state}</td>
+      <td>
+        <a href={"%s/logPage?appId=%s&executorId=%s&logType=stdout"
+          .format(executor.worker.webUiAddress, executor.application.id, executor.id)}>stdout</a>
+        <a href={"%s/logPage?appId=%s&executorId=%s&logType=stderr"
+          .format(executor.worker.webUiAddress, executor.application.id, executor.id)}>stderr</a>
+      </td>
+    </tr>
+  }
+}
diff --git a/core/src/main/scala/spark/deploy/master/ui/IndexPage.scala b/core/src/main/scala/spark/deploy/master/ui/IndexPage.scala
new file mode 100644
index 0000000000..b05197c1b9
--- /dev/null
+++ b/core/src/main/scala/spark/deploy/master/ui/IndexPage.scala
@@ -0,0 +1,138 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.deploy.master.ui
+
+import akka.dispatch.Await
+import akka.pattern.ask
+import akka.util.duration._
+
+import javax.servlet.http.HttpServletRequest
+
+import scala.xml.Node
+
+import spark.deploy.{RequestMasterState, DeployWebUI, MasterState}
+import spark.Utils
+import spark.ui.UIUtils
+import spark.deploy.master.{ApplicationInfo, WorkerInfo}
+
+private[spark] class IndexPage(parent: MasterWebUI) {
+  val master = parent.master
+  implicit val timeout = parent.timeout
+
+  /** Index view listing applications and executors */
+  def render(request: HttpServletRequest): Seq[Node] = {
+    val stateFuture = (master ? RequestMasterState)(timeout).mapTo[MasterState]
+    val state = Await.result(stateFuture, 30 seconds)
+
+    val workerHeaders = Seq("Id", "Address", "State", "Cores", "Memory")
+    val workers = state.workers.sortBy(_.id)
+    val workerTable = UIUtils.listingTable(workerHeaders, workerRow, workers)
+
+    val appHeaders = Seq("ID", "Description", "Cores", "Memory per Node", "Submit Time", "User",
+      "State", "Duration")
+    val activeApps = state.activeApps.sortBy(_.startTime).reverse
+    val activeAppsTable = UIUtils.listingTable(appHeaders, appRow, activeApps)
+    val completedApps = state.completedApps.sortBy(_.endTime).reverse
+    val completedAppsTable = UIUtils.listingTable(appHeaders, appRow, completedApps)
+
+    val content =
+        <hr />
+        <div class="row">
+          <div class="span12">
+            <ul class="unstyled">
+              <li><strong>URL:</strong> {state.uri}</li>
+              <li><strong>Workers:</strong> {state.workers.size}</li>
+              <li><strong>Cores:</strong> {state.workers.map(_.cores).sum} Total,
+                {state.workers.map(_.coresUsed).sum} Used</li>
+              <li><strong>Memory:</strong>
+                {Utils.memoryMegabytesToString(state.workers.map(_.memory).sum)} Total,
+                {Utils.memoryMegabytesToString(state.workers.map(_.memoryUsed).sum)} Used</li>
+              <li><strong>Applications:</strong>
+                {state.activeApps.size} Running,
+                {state.completedApps.size} Completed </li>
+            </ul>
+          </div>
+        </div>
+
+        <div class="row">
+          <div class="span12">
+            <h3> Workers </h3>
+            <br/>
+            {workerTable}
+          </div>
+        </div>
+
+          <hr/>
+
+        <div class="row">
+          <div class="span12">
+            <h3> Running Applications </h3>
+            <br/>
+            {activeAppsTable}
+          </div>
+        </div>
+
+          <hr/>
+
+        <div class="row">
+          <div class="span12">
+            <h3> Completed Applications </h3>
+            <br/>
+            {completedAppsTable}
+          </div>
+        </div>;
+    UIUtils.basicSparkPage(content, "Spark Master: " + state.uri)
+  }
+
+  def workerRow(worker: WorkerInfo): Seq[Node] = {
+    <tr>
+      <td>
+        <a href={worker.webUiAddress}>{worker.id}</a>
+      </td>
+      <td>{worker.host}:{worker.port}</td>
+      <td>{worker.state}</td>
+      <td>{worker.cores} ({worker.coresUsed} Used)</td>
+      <td sorttable_customkey={"%s.%s".format(worker.memory, worker.memoryUsed)}>
+        {Utils.memoryMegabytesToString(worker.memory)}
+        ({Utils.memoryMegabytesToString(worker.memoryUsed)} Used)
+      </td>
+    </tr>
+  }
+
+
+  def appRow(app: ApplicationInfo): Seq[Node] = {
+    <tr>
+      <td>
+        <a href={"app?appId=" + app.id}>{app.id}</a>
+      </td>
+      <td>
+        <a href={app.appUiUrl}>{app.desc.name}</a>
+      </td>
+      <td>
+        {app.coresGranted}
+      </td>
+      <td sorttable_customkey={app.desc.memoryPerSlave.toString}>
+        {Utils.memoryMegabytesToString(app.desc.memoryPerSlave)}
+      </td>
+      <td>{DeployWebUI.formatDate(app.submitDate)}</td>
+      <td>{app.desc.user}</td>
+      <td>{app.state.toString}</td>
+      <td>{DeployWebUI.formatDuration(app.duration)}</td>
+    </tr>
+  }
+}
diff --git a/core/src/main/scala/spark/deploy/master/ui/MasterWebUI.scala b/core/src/main/scala/spark/deploy/master/ui/MasterWebUI.scala
new file mode 100644
index 0000000000..04b32c7968
--- /dev/null
+++ b/core/src/main/scala/spark/deploy/master/ui/MasterWebUI.scala
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.deploy.master.ui
+
+import akka.actor.ActorRef
+import akka.util.Duration
+
+import javax.servlet.http.HttpServletRequest
+
+import org.eclipse.jetty.server.{Handler, Server}
+
+import spark.{Logging, Utils}
+import spark.ui.JettyUtils
+import spark.ui.JettyUtils._
+
+/**
+ * Web UI server for the standalone master.
+ */
+private[spark]
+class MasterWebUI(val master: ActorRef, requestedPort: Option[Int] = None) extends Logging {
+  implicit val timeout = Duration.create(
+    System.getProperty("spark.akka.askTimeout", "10").toLong, "seconds")
+  val host = Utils.localHostName()
+  val port = requestedPort.getOrElse(
+    System.getProperty("master.ui.port", MasterWebUI.DEFAULT_PORT).toInt)
+
+  var server: Option[Server] = None
+  var boundPort: Option[Int] = None
+
+  val applicationPage = new ApplicationPage(this)
+  val indexPage = new IndexPage(this)
+
+  def start() {
+    try {
+      val (srv, bPort) = JettyUtils.startJettyServer("0.0.0.0", port, handlers)
+      server = Some(srv)
+      boundPort = Some(bPort)
+      logInfo("Started Master web UI at http://%s:%d".format(host, boundPort.get))
+    } catch {
+      case e: Exception =>
+        logError("Failed to create Master JettyUtils", e)
+        System.exit(1)
+    }
+  }
+
+  val handlers = Array[(String, Handler)](
+    ("/static", createStaticHandler(MasterWebUI.STATIC_RESOURCE_DIR)),
+    ("/app/json", (request: HttpServletRequest) => applicationPage.renderJson(request)),
+    ("/app", (request: HttpServletRequest) => applicationPage.render(request)),
+    ("*", (request: HttpServletRequest) => indexPage.render(request))
+  )
+
+  def stop() {
+    server.foreach(_.stop())
+  }
+}
+
+private[spark] object MasterWebUI {
+  val STATIC_RESOURCE_DIR = "spark/ui/static"
+  val DEFAULT_PORT = "8080"
+}
diff --git a/core/src/main/scala/spark/deploy/worker/ExecutorRunner.scala b/core/src/main/scala/spark/deploy/worker/ExecutorRunner.scala
index 04a774658e..8b51ff1c3a 100644
--- a/core/src/main/scala/spark/deploy/worker/ExecutorRunner.scala
+++ b/core/src/main/scala/spark/deploy/worker/ExecutorRunner.scala
@@ -1,6 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.worker
 
 import java.io._
+import java.lang.System.getenv
 import spark.deploy.{ExecutorState, ExecutorStateChanged, ApplicationDescription}
 import akka.actor.ActorRef
 import spark.{Utils, Logging}
@@ -40,7 +58,7 @@ private[spark] class ExecutorRunner(
     workerThread.start()
 
     // Shutdown hook that kills actors on shutdown.
-    shutdownHook = new Thread() { 
+    shutdownHook = new Thread() {
       override def run() {
         if (process != null) {
           logInfo("Shutdown hook killing child process.")
@@ -77,9 +95,31 @@ private[spark] class ExecutorRunner(
 
   def buildCommandSeq(): Seq[String] = {
     val command = appDesc.command
-    val script = if (System.getProperty("os.name").startsWith("Windows")) "run.cmd" else "run"
-    val runScript = new File(sparkHome, script).getCanonicalPath
-    Seq(runScript, command.mainClass) ++ (command.arguments ++ Seq(appId)).map(substituteVariables)
+    val runner = Option(getenv("JAVA_HOME")).map(_ + "/bin/java").getOrElse("java")
+    // SPARK-698: do not call the run.cmd script, as process.destroy()
+    // fails to kill a process tree on Windows
+    Seq(runner) ++ buildJavaOpts() ++ Seq(command.mainClass) ++
+      command.arguments.map(substituteVariables)
+  }
+
+  /**
+   * Attention: this must always be aligned with the environment variables in the run scripts and
+   * the way the JAVA_OPTS are assembled there.
+   */
+  def buildJavaOpts(): Seq[String] = {
+    val libraryOpts = Option(getenv("SPARK_LIBRARY_PATH"))
+      .map(p => List("-Djava.library.path=" + p))
+      .getOrElse(Nil)
+    val userOpts = Option(getenv("SPARK_JAVA_OPTS")).map(Utils.splitCommandString).getOrElse(Nil)
+    val memoryOpts = Seq("-Xms" + memory + "M", "-Xmx" + memory + "M")
+
+    // Figure out our classpath with the external compute-classpath script
+    val ext = if (System.getProperty("os.name").startsWith("Windows")) ".cmd" else ".sh"
+    val classPath = Utils.executeAndGetOutput(
+        Seq(sparkHome + "/bin/compute-classpath" + ext),
+        extraEnvironment=appDesc.command.environment)
+
+    Seq("-cp", classPath) ++ libraryOpts ++ userOpts ++ memoryOpts
   }
 
   /** Spawn a thread that will redirect a given stream to a file */
@@ -115,7 +155,6 @@ private[spark] class ExecutorRunner(
       for ((key, value) <- appDesc.command.environment) {
         env.put(key, value)
       }
-      env.put("SPARK_MEM", memory.toString + "m")
       // In case we are running this from within the Spark Shell, avoid creating a "scala"
       // parent process for the executor command
       env.put("SPARK_LAUNCH_WITH_SCALA", "0")
diff --git a/core/src/main/scala/spark/deploy/worker/Worker.scala b/core/src/main/scala/spark/deploy/worker/Worker.scala
index 3dc2207170..0bd88ea253 100644
--- a/core/src/main/scala/spark/deploy/worker/Worker.scala
+++ b/core/src/main/scala/spark/deploy/worker/Worker.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.worker
 
 import scala.collection.mutable.{ArrayBuffer, HashMap}
@@ -14,6 +31,7 @@ import spark.deploy.LaunchExecutor
 import spark.deploy.RegisterWorkerFailed
 import spark.deploy.master.Master
 import java.io.File
+import ui.WorkerWebUI
 
 private[spark] class Worker(
     host: String,
@@ -44,6 +62,7 @@ private[spark] class Worker(
     val envVar = System.getenv("SPARK_PUBLIC_DNS")
     if (envVar != null) envVar else host
   }
+  var webUi: WorkerWebUI = null
 
   var coresUsed = 0
   var memoryUsed = 0
@@ -75,29 +94,19 @@ private[spark] class Worker(
     sparkHome = new File(Option(System.getenv("SPARK_HOME")).getOrElse("."))
     logInfo("Spark home: " + sparkHome)
     createWorkDir()
+    webUi = new WorkerWebUI(this, workDir, Some(webUiPort))
+    webUi.start()
     connectToMaster()
-    startWebUi()
   }
 
   def connectToMaster() {
     logInfo("Connecting to master " + masterUrl)
     master = context.actorFor(Master.toAkkaUrl(masterUrl))
-    master ! RegisterWorker(workerId, host, port, cores, memory, webUiPort, publicAddress)
+    master ! RegisterWorker(workerId, host, port, cores, memory, webUi.boundPort.get, publicAddress)
     context.system.eventStream.subscribe(self, classOf[RemoteClientLifeCycleEvent])
     context.watch(master) // Doesn't work with remote actors, but useful for testing
   }
 
-  def startWebUi() {
-    val webUi = new WorkerWebUI(context.system, self, workDir)
-    try {
-      AkkaUtils.startSprayServer(context.system, "0.0.0.0", webUiPort, webUi.handler)
-    } catch {
-      case e: Exception =>
-        logError("Failed to create web UI", e)
-        System.exit(1)
-    }
-  }
-
   override def receive = {
     case RegisteredWorker(url) =>
       masterWebUiUrl = url
@@ -168,6 +177,7 @@ private[spark] class Worker(
 
   override def postStop() {
     executors.values.foreach(_.kill())
+    webUi.stop()
   }
 }
 
diff --git a/core/src/main/scala/spark/deploy/worker/WorkerArguments.scala b/core/src/main/scala/spark/deploy/worker/WorkerArguments.scala
index 2b96611ee3..9fcd3260ca 100644
--- a/core/src/main/scala/spark/deploy/worker/WorkerArguments.scala
+++ b/core/src/main/scala/spark/deploy/worker/WorkerArguments.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.deploy.worker
 
 import spark.util.IntParam
diff --git a/core/src/main/scala/spark/deploy/worker/WorkerWebUI.scala b/core/src/main/scala/spark/deploy/worker/WorkerWebUI.scala
deleted file mode 100644
index 3235c50d1b..0000000000
--- a/core/src/main/scala/spark/deploy/worker/WorkerWebUI.scala
+++ /dev/null
@@ -1,57 +0,0 @@
-package spark.deploy.worker
-
-import akka.actor.{ActorRef, ActorSystem}
-import akka.dispatch.Await
-import akka.pattern.ask
-import akka.util.{Duration, Timeout}
-import akka.util.duration._
-import cc.spray.Directives
-import cc.spray.typeconversion.TwirlSupport._
-import cc.spray.http.MediaTypes
-import cc.spray.typeconversion.SprayJsonSupport._
-
-import spark.deploy.{WorkerState, RequestWorkerState}
-import spark.deploy.JsonProtocol._
-import java.io.File
-
-/**
- * Web UI server for the standalone worker.
- */
-private[spark]
-class WorkerWebUI(val actorSystem: ActorSystem, worker: ActorRef, workDir: File) extends Directives {
-  val RESOURCE_DIR = "spark/deploy/worker/webui"
-  val STATIC_RESOURCE_DIR = "spark/deploy/static"
-  
-  implicit val timeout = Timeout(Duration.create(System.getProperty("spark.akka.askTimeout", "10").toLong, "seconds"))
-  
-  val handler = {
-    get {
-      (path("") & parameters('format ?)) {
-        case Some(js) if js.equalsIgnoreCase("json") => {
-          val future = worker ? RequestWorkerState
-          respondWithMediaType(MediaTypes.`application/json`) { ctx =>
-            ctx.complete(future.mapTo[WorkerState])
-          }
-        }
-        case _ =>
-          completeWith{
-            val future = worker ? RequestWorkerState
-            future.map { workerState =>
-              spark.deploy.worker.html.index(workerState.asInstanceOf[WorkerState])
-            }
-          }
-      } ~
-      path("log") {
-        parameters("appId", "executorId", "logType") { (appId, executorId, logType) =>
-          respondWithMediaType(cc.spray.http.MediaTypes.`text/plain`) {
-            getFromFileName(workDir.getPath() + "/" + appId + "/" + executorId + "/" + logType)
-          }
-        }
-      } ~
-      pathPrefix("static") {
-        getFromResourceDirectory(STATIC_RESOURCE_DIR)
-      } ~
-      getFromResourceDirectory(RESOURCE_DIR)
-    }
-  }
-}
diff --git a/core/src/main/scala/spark/deploy/worker/ui/IndexPage.scala b/core/src/main/scala/spark/deploy/worker/ui/IndexPage.scala
new file mode 100644
index 0000000000..7548a26c2e
--- /dev/null
+++ b/core/src/main/scala/spark/deploy/worker/ui/IndexPage.scala
@@ -0,0 +1,117 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.deploy.worker.ui
+
+import akka.dispatch.Await
+import akka.pattern.ask
+import akka.util.duration._
+
+import javax.servlet.http.HttpServletRequest
+
+import net.liftweb.json.JsonAST.JValue
+
+import scala.xml.Node
+
+import spark.deploy.{RequestWorkerState, JsonProtocol, WorkerState}
+import spark.deploy.worker.ExecutorRunner
+import spark.Utils
+import spark.ui.UIUtils
+
+private[spark] class IndexPage(parent: WorkerWebUI) {
+  val workerActor = parent.worker.self
+  val worker = parent.worker
+  val timeout = parent.timeout
+
+  def renderJson(request: HttpServletRequest): JValue = {
+    val stateFuture = (workerActor ? RequestWorkerState)(timeout).mapTo[WorkerState]
+    val workerState = Await.result(stateFuture, 30 seconds)
+    JsonProtocol.writeWorkerState(workerState)
+  }
+
+  def render(request: HttpServletRequest): Seq[Node] = {
+    val stateFuture = (workerActor ? RequestWorkerState)(timeout).mapTo[WorkerState]
+    val workerState = Await.result(stateFuture, 30 seconds)
+
+    val executorHeaders = Seq("ExecutorID", "Cores", "Memory", "Job Details", "Logs")
+    val runningExecutorTable =
+      UIUtils.listingTable(executorHeaders, executorRow, workerState.executors)
+    val finishedExecutorTable =
+      UIUtils.listingTable(executorHeaders, executorRow, workerState.finishedExecutors)
+
+    val content =
+        <hr />
+        <div class="row"> <!-- Worker Details -->
+          <div class="span12">
+            <ul class="unstyled">
+              <li><strong>ID:</strong> {workerState.workerId}</li>
+              <li><strong>
+                Master URL:</strong> {workerState.masterUrl}
+              </li>
+              <li><strong>Cores:</strong> {workerState.cores} ({workerState.coresUsed} Used)</li>
+              <li><strong>Memory:</strong> {Utils.memoryMegabytesToString(workerState.memory)}
+                ({Utils.memoryMegabytesToString(workerState.memoryUsed)} Used)</li>
+            </ul>
+            <p><a href={workerState.masterWebUiUrl}>Back to Master</a></p>
+          </div>
+        </div>
+          <hr/>
+
+        <div class="row"> <!-- Running Executors -->
+          <div class="span12">
+            <h3> Running Executors {workerState.executors.size} </h3>
+            <br/>
+            {runningExecutorTable}
+          </div>
+        </div>
+          <hr/>
+
+        <div class="row"> <!-- Finished Executors  -->
+          <div class="span12">
+            <h3> Finished Executors </h3>
+            <br/>
+            {finishedExecutorTable}
+          </div>
+        </div>;
+
+    UIUtils.basicSparkPage(content, "Spark Worker on %s:%s".format(workerState.host, workerState.port))
+  }
+
+  def executorRow(executor: ExecutorRunner): Seq[Node] = {
+    <tr>
+      <td>{executor.execId}</td>
+      <td>{executor.cores}</td>
+      <td sorttable_customkey={executor.memory.toString}>
+        {Utils.memoryMegabytesToString(executor.memory)}
+      </td>
+      <td>
+        <ul class="unstyled">
+          <li><strong>ID:</strong> {executor.appId}</li>
+          <li><strong>Name:</strong> {executor.appDesc.name}</li>
+          <li><strong>User:</strong> {executor.appDesc.user}</li>
+        </ul>
+      </td>
+      <td>
+	 <a href={"logPage?appId=%s&executorId=%s&logType=stdout"
+          .format(executor.appId, executor.execId)}>stdout</a>
+	 <a href={"logPage?appId=%s&executorId=%s&logType=stderr"
+          .format(executor.appId, executor.execId)}>stderr</a>
+      </td> 
+    </tr>
+  }
+
+}
diff --git a/core/src/main/scala/spark/deploy/worker/ui/WorkerWebUI.scala b/core/src/main/scala/spark/deploy/worker/ui/WorkerWebUI.scala
new file mode 100644
index 0000000000..61d4cd6d99
--- /dev/null
+++ b/core/src/main/scala/spark/deploy/worker/ui/WorkerWebUI.scala
@@ -0,0 +1,182 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.deploy.worker.ui
+
+import akka.actor.ActorRef
+import akka.util.{Duration, Timeout}
+
+import java.io.{FileInputStream, File}
+
+import javax.servlet.http.HttpServletRequest
+
+import org.eclipse.jetty.server.{Handler, Server}
+
+import spark.deploy.worker.Worker
+import spark.{Utils, Logging}
+import spark.ui.JettyUtils
+import spark.ui.JettyUtils._
+import spark.ui.UIUtils
+
+/**
+ * Web UI server for the standalone worker.
+ */
+private[spark]
+class WorkerWebUI(val worker: Worker, val workDir: File, requestedPort: Option[Int] = None)
+    extends Logging {
+  implicit val timeout = Timeout(
+    Duration.create(System.getProperty("spark.akka.askTimeout", "10").toLong, "seconds"))
+  val host = Utils.localHostName()
+  val port = requestedPort.getOrElse(
+    System.getProperty("worker.ui.port", WorkerWebUI.DEFAULT_PORT).toInt)
+
+  var server: Option[Server] = None
+  var boundPort: Option[Int] = None
+
+  val indexPage = new IndexPage(this)
+
+  val handlers = Array[(String, Handler)](
+    ("/static", createStaticHandler(WorkerWebUI.STATIC_RESOURCE_DIR)),
+    ("/log", (request: HttpServletRequest) => log(request)),
+    ("/logPage", (request: HttpServletRequest) => logPage(request)),
+    ("/json", (request: HttpServletRequest) => indexPage.renderJson(request)),
+    ("*", (request: HttpServletRequest) => indexPage.render(request))
+  )
+
+  def start() {
+    try {
+      val (srv, bPort) = JettyUtils.startJettyServer("0.0.0.0", port, handlers)
+      server = Some(srv)
+      boundPort = Some(bPort)
+      logInfo("Started Worker web UI at http://%s:%d".format(host, bPort))
+    } catch {
+      case e: Exception =>
+        logError("Failed to create Worker JettyUtils", e)
+        System.exit(1)
+    }
+  }
+
+  def log(request: HttpServletRequest): String = {
+    val defaultBytes = 100 * 1024
+    val appId = request.getParameter("appId")
+    val executorId = request.getParameter("executorId")
+    val logType = request.getParameter("logType")
+    val offset = Option(request.getParameter("offset")).map(_.toLong)
+    val byteLength = Option(request.getParameter("byteLength")).map(_.toInt).getOrElse(defaultBytes)
+    val path = "%s/%s/%s/%s".format(workDir.getPath, appId, executorId, logType)
+
+    val (startByte, endByte) = getByteRange(path, offset, byteLength)
+    val file = new File(path)
+    val logLength = file.length
+
+    val pre = "==== Bytes %s-%s of %s of %s/%s/%s ====\n"
+      .format(startByte, endByte, logLength, appId, executorId, logType)
+    pre + Utils.offsetBytes(path, startByte, endByte)
+  }
+
+  def logPage(request: HttpServletRequest): Seq[scala.xml.Node] = {
+    val defaultBytes = 100 * 1024
+    val appId = request.getParameter("appId")
+    val executorId = request.getParameter("executorId")
+    val logType = request.getParameter("logType")
+    val offset = Option(request.getParameter("offset")).map(_.toLong)
+    val byteLength = Option(request.getParameter("byteLength")).map(_.toInt).getOrElse(defaultBytes)
+    val path = "%s/%s/%s/%s".format(workDir.getPath, appId, executorId, logType)
+
+    val (startByte, endByte) = getByteRange(path, offset, byteLength)
+    val file = new File(path)
+    val logLength = file.length
+
+    val logText = <node>{Utils.offsetBytes(path, startByte, endByte)}</node>
+
+    val linkToMaster = <p><a href={worker.masterWebUiUrl}>Back to Master</a></p>
+
+    val range = <span>Bytes {startByte.toString} - {endByte.toString} of {logLength}</span>
+
+    val backButton =
+      if (startByte > 0) {
+        <a href={"?appId=%s&executorId=%s&logType=%s&offset=%s&byteLength=%s"
+          .format(appId, executorId, logType, math.max(startByte-byteLength, 0),
+            byteLength)}>
+          <button>Previous {Utils.memoryBytesToString(math.min(byteLength, startByte))}</button>
+        </a>
+      }
+      else {
+        <button disabled="disabled">Previous 0 B</button>
+      }
+
+    val nextButton =
+      if (endByte < logLength) {
+        <a href={"?appId=%s&executorId=%s&logType=%s&offset=%s&byteLength=%s".
+          format(appId, executorId, logType, endByte, byteLength)}>
+          <button>Next {Utils.memoryBytesToString(math.min(byteLength, logLength-endByte))}</button>
+        </a>
+      }
+      else {
+        <button disabled="disabled">Next 0 B</button>
+      }
+
+    val content =
+      <html>
+        <body>
+          {linkToMaster}
+          <hr />
+          <div>
+            <div style="float:left;width:40%">{backButton}</div>
+            <div style="float:left;">{range}</div>
+            <div style="float:right;">{nextButton}</div>
+          </div>
+          <br />
+          <div style="height:500px;overflow:auto;padding:5px;">
+            <pre>{logText}</pre>
+          </div>
+        </body>
+      </html>
+    UIUtils.basicSparkPage(content, logType + " log page for " + appId)
+  }
+
+  /** Determine the byte range for a log or log page. */
+  def getByteRange(path: String, offset: Option[Long], byteLength: Int)
+  : (Long, Long) = {
+    val defaultBytes = 100 * 1024
+    val maxBytes = 1024 * 1024
+
+    val file = new File(path)
+    val logLength = file.length()
+    val getOffset = offset.getOrElse(logLength-defaultBytes)
+
+    val startByte =
+      if (getOffset < 0) 0L
+      else if (getOffset > logLength) logLength
+      else getOffset
+
+    val logPageLength = math.min(byteLength, maxBytes)
+
+    val endByte = math.min(startByte+logPageLength, logLength)
+
+    (startByte, endByte)
+  }
+
+  def stop() {
+    server.foreach(_.stop())
+  }
+}
+
+private[spark] object WorkerWebUI {
+  val STATIC_RESOURCE_DIR = "spark/ui/static"
+  val DEFAULT_PORT="8081"
+}
diff --git a/core/src/main/scala/spark/executor/Executor.scala b/core/src/main/scala/spark/executor/Executor.scala
index 890938d48b..2e81151882 100644
--- a/core/src/main/scala/spark/executor/Executor.scala
+++ b/core/src/main/scala/spark/executor/Executor.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.executor
 
 import java.io.{File, FileOutputStream}
@@ -42,7 +59,8 @@ private[spark] class Executor(executorId: String, slaveHostname: String, propert
 
   // Create our ClassLoader and set it on this thread
   private val urlClassLoader = createClassLoader()
-  Thread.currentThread.setContextClassLoader(urlClassLoader)
+  private val replClassLoader = addReplClassLoaderIfNeeded(urlClassLoader)
+  Thread.currentThread.setContextClassLoader(replClassLoader)
 
   // Make any thread terminations due to uncaught exceptions kill the entire
   // executor process to avoid surprising stalls.
@@ -88,22 +106,26 @@ private[spark] class Executor(executorId: String, slaveHostname: String, propert
     override def run() {
       val startTime = System.currentTimeMillis()
       SparkEnv.set(env)
-      Thread.currentThread.setContextClassLoader(urlClassLoader)
+      Thread.currentThread.setContextClassLoader(replClassLoader)
       val ser = SparkEnv.get.closureSerializer.newInstance()
       logInfo("Running task ID " + taskId)
       context.statusUpdate(taskId, TaskState.RUNNING, EMPTY_BYTE_BUFFER)
+      var attemptedTask: Option[Task[Any]] = None
+      var taskStart: Long = 0
       try {
         SparkEnv.set(env)
         Accumulators.clear()
         val (taskFiles, taskJars, taskBytes) = Task.deserializeWithDependencies(serializedTask)
         updateDependencies(taskFiles, taskJars)
         val task = ser.deserialize[Task[Any]](taskBytes, Thread.currentThread.getContextClassLoader)
+        attemptedTask = Some(task)
         logInfo("Its generation is " + task.generation)
         env.mapOutputTracker.updateGeneration(task.generation)
-        val taskStart = System.currentTimeMillis()
+        taskStart = System.currentTimeMillis()
         val value = task.run(taskId.toInt)
         val taskFinish = System.currentTimeMillis()
         task.metrics.foreach{ m =>
+          m.hostname = Utils.localHostName
           m.executorDeserializeTime = (taskStart - startTime).toInt
           m.executorRunTime = (taskFinish - taskStart).toInt
         }
@@ -127,7 +149,10 @@ private[spark] class Executor(executorId: String, slaveHostname: String, propert
         }
 
         case t: Throwable => {
-          val reason = ExceptionFailure(t.getClass.getName, t.toString, t.getStackTrace)
+          val serviceTime = (System.currentTimeMillis() - taskStart).toInt
+          val metrics = attemptedTask.flatMap(t => t.metrics)
+          metrics.foreach{m => m.executorRunTime = serviceTime}
+          val reason = ExceptionFailure(t.getClass.getName, t.toString, t.getStackTrace, metrics)
           context.statusUpdate(taskId, TaskState.FAILED, ser.serialize(reason))
 
           // TODO: Should we exit the whole executor here? On the one hand, the failed task may
@@ -152,26 +177,31 @@ private[spark] class Executor(executorId: String, slaveHostname: String, propert
     val urls = currentJars.keySet.map { uri =>
       new File(uri.split("/").last).toURI.toURL
     }.toArray
-    loader = new URLClassLoader(urls, loader)
+    new ExecutorURLClassLoader(urls, loader)
+  }
 
-    // If the REPL is in use, add another ClassLoader that will read
-    // new classes defined by the REPL as the user types code
+  /**
+   * If the REPL is in use, add another ClassLoader that will read
+   * new classes defined by the REPL as the user types code
+   */
+  private def addReplClassLoaderIfNeeded(parent: ClassLoader): ClassLoader = {
     val classUri = System.getProperty("spark.repl.class.uri")
     if (classUri != null) {
       logInfo("Using REPL class URI: " + classUri)
-      loader = {
-        try {
-          val klass = Class.forName("spark.repl.ExecutorClassLoader")
-            .asInstanceOf[Class[_ <: ClassLoader]]
-          val constructor = klass.getConstructor(classOf[String], classOf[ClassLoader])
-          constructor.newInstance(classUri, loader)
-        } catch {
-          case _: ClassNotFoundException => loader
-        }
+      try {
+        val klass = Class.forName("spark.repl.ExecutorClassLoader")
+          .asInstanceOf[Class[_ <: ClassLoader]]
+        val constructor = klass.getConstructor(classOf[String], classOf[ClassLoader])
+        return constructor.newInstance(classUri, parent)
+      } catch {
+        case _: ClassNotFoundException =>
+          logError("Could not find spark.repl.ExecutorClassLoader on classpath!")
+          System.exit(1)
+          null
       }
+    } else {
+      return parent
     }
-
-    return new ExecutorURLClassLoader(Array(), loader)
   }
 
   /**
diff --git a/core/src/main/scala/spark/executor/ExecutorBackend.scala b/core/src/main/scala/spark/executor/ExecutorBackend.scala
index e97e509700..33a6f8a824 100644
--- a/core/src/main/scala/spark/executor/ExecutorBackend.scala
+++ b/core/src/main/scala/spark/executor/ExecutorBackend.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.executor
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/executor/ExecutorExitCode.scala b/core/src/main/scala/spark/executor/ExecutorExitCode.scala
index fd76029cb3..64b9fb88f8 100644
--- a/core/src/main/scala/spark/executor/ExecutorExitCode.scala
+++ b/core/src/main/scala/spark/executor/ExecutorExitCode.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.executor
 
 /**
diff --git a/core/src/main/scala/spark/executor/ExecutorURLClassLoader.scala b/core/src/main/scala/spark/executor/ExecutorURLClassLoader.scala
index 5beb4d049e..09d12fb65b 100644
--- a/core/src/main/scala/spark/executor/ExecutorURLClassLoader.scala
+++ b/core/src/main/scala/spark/executor/ExecutorURLClassLoader.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.executor
 
 import java.net.{URLClassLoader, URL}
diff --git a/core/src/main/scala/spark/executor/MesosExecutorBackend.scala b/core/src/main/scala/spark/executor/MesosExecutorBackend.scala
index 10f3531df0..4961c42fad 100644
--- a/core/src/main/scala/spark/executor/MesosExecutorBackend.scala
+++ b/core/src/main/scala/spark/executor/MesosExecutorBackend.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.executor
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/executor/StandaloneExecutorBackend.scala b/core/src/main/scala/spark/executor/StandaloneExecutorBackend.scala
index ebe2ac68d8..f4003da732 100644
--- a/core/src/main/scala/spark/executor/StandaloneExecutorBackend.scala
+++ b/core/src/main/scala/spark/executor/StandaloneExecutorBackend.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.executor
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/executor/TaskMetrics.scala b/core/src/main/scala/spark/executor/TaskMetrics.scala
index a7c56c2371..3151627839 100644
--- a/core/src/main/scala/spark/executor/TaskMetrics.scala
+++ b/core/src/main/scala/spark/executor/TaskMetrics.scala
@@ -1,7 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.executor
 
 class TaskMetrics extends Serializable {
   /**
+   * Host's name the task runs on 
+   */
+  var hostname: String = _
+
+  /**
    * Time taken on the executor to deserialize this task
    */
   var executorDeserializeTime: Int = _
@@ -34,9 +56,14 @@ object TaskMetrics {
 
 class ShuffleReadMetrics extends Serializable {
   /**
+   * Time when shuffle finishs
+   */
+  var shuffleFinishTime: Long = _
+
+  /**
    * Total number of blocks fetched in a shuffle (remote or local)
    */
-  var totalBlocksFetched : Int = _
+  var totalBlocksFetched: Int = _
 
   /**
    * Number of remote blocks fetched in a shuffle
diff --git a/core/src/main/scala/spark/network/BufferMessage.scala b/core/src/main/scala/spark/network/BufferMessage.scala
index 7b0e489a6c..e566aeac13 100644
--- a/core/src/main/scala/spark/network/BufferMessage.scala
+++ b/core/src/main/scala/spark/network/BufferMessage.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import java.nio.ByteBuffer
@@ -91,4 +108,4 @@ class BufferMessage(id_ : Int, val buffers: ArrayBuffer[ByteBuffer], var ackId:
       "BufferMessage(id = " + id + ", size = " + size + ")"
     }
   }
-}
-\ No newline at end of file
+}
diff --git a/core/src/main/scala/spark/network/Connection.scala b/core/src/main/scala/spark/network/Connection.scala
index 6e28f677a3..b66c00b58c 100644
--- a/core/src/main/scala/spark/network/Connection.scala
+++ b/core/src/main/scala/spark/network/Connection.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import spark._
diff --git a/core/src/main/scala/spark/network/ConnectionManager.scala b/core/src/main/scala/spark/network/ConnectionManager.scala
index 624a094856..6c4e7dc03e 100644
--- a/core/src/main/scala/spark/network/ConnectionManager.scala
+++ b/core/src/main/scala/spark/network/ConnectionManager.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import spark._
diff --git a/core/src/main/scala/spark/network/ConnectionManagerId.scala b/core/src/main/scala/spark/network/ConnectionManagerId.scala
index b554e84251..9d5c518293 100644
--- a/core/src/main/scala/spark/network/ConnectionManagerId.scala
+++ b/core/src/main/scala/spark/network/ConnectionManagerId.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import java.net.InetSocketAddress
diff --git a/core/src/main/scala/spark/network/ConnectionManagerTest.scala b/core/src/main/scala/spark/network/ConnectionManagerTest.scala
index 533e4610f3..9e3827aaf5 100644
--- a/core/src/main/scala/spark/network/ConnectionManagerTest.scala
+++ b/core/src/main/scala/spark/network/ConnectionManagerTest.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import spark._
diff --git a/core/src/main/scala/spark/network/Message.scala b/core/src/main/scala/spark/network/Message.scala
index d4f03610eb..a25457ea35 100644
--- a/core/src/main/scala/spark/network/Message.scala
+++ b/core/src/main/scala/spark/network/Message.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/network/MessageChunk.scala b/core/src/main/scala/spark/network/MessageChunk.scala
index aaf9204d0e..784db5ab62 100644
--- a/core/src/main/scala/spark/network/MessageChunk.scala
+++ b/core/src/main/scala/spark/network/MessageChunk.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/network/MessageChunkHeader.scala b/core/src/main/scala/spark/network/MessageChunkHeader.scala
index 3693d509d6..18d0cbcc14 100644
--- a/core/src/main/scala/spark/network/MessageChunkHeader.scala
+++ b/core/src/main/scala/spark/network/MessageChunkHeader.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import java.net.InetAddress
diff --git a/core/src/main/scala/spark/network/ReceiverTest.scala b/core/src/main/scala/spark/network/ReceiverTest.scala
index a174d5f403..2bbc736f40 100644
--- a/core/src/main/scala/spark/network/ReceiverTest.scala
+++ b/core/src/main/scala/spark/network/ReceiverTest.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/network/SenderTest.scala b/core/src/main/scala/spark/network/SenderTest.scala
index a4ff69e4d2..542c54c36b 100644
--- a/core/src/main/scala/spark/network/SenderTest.scala
+++ b/core/src/main/scala/spark/network/SenderTest.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/network/netty/FileHeader.scala b/core/src/main/scala/spark/network/netty/FileHeader.scala
index aed4254234..bf46d32aa3 100644
--- a/core/src/main/scala/spark/network/netty/FileHeader.scala
+++ b/core/src/main/scala/spark/network/netty/FileHeader.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty
 
 import io.netty.buffer._
diff --git a/core/src/main/scala/spark/network/netty/ShuffleCopier.scala b/core/src/main/scala/spark/network/netty/ShuffleCopier.scala
index a91f5a886d..b01f6369f6 100644
--- a/core/src/main/scala/spark/network/netty/ShuffleCopier.scala
+++ b/core/src/main/scala/spark/network/netty/ShuffleCopier.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty
 
 import java.util.concurrent.Executors
@@ -9,19 +26,36 @@ import io.netty.util.CharsetUtil
 import spark.Logging
 import spark.network.ConnectionManagerId
 
+import scala.collection.JavaConverters._
+
 
 private[spark] class ShuffleCopier extends Logging {
 
-  def getBlock(cmId: ConnectionManagerId, blockId: String,
+  def getBlock(host: String, port: Int, blockId: String,
       resultCollectCallback: (String, Long, ByteBuf) => Unit) {
 
     val handler = new ShuffleCopier.ShuffleClientHandler(resultCollectCallback)
-    val fc = new FileClient(handler)
-    fc.init()
-    fc.connect(cmId.host, cmId.port)
-    fc.sendRequest(blockId)
-    fc.waitForClose()
-    fc.close()
+    val connectTimeout = System.getProperty("spark.shuffle.netty.connect.timeout", "60000").toInt
+    val fc = new FileClient(handler, connectTimeout)
+
+    try {
+      fc.init()
+      fc.connect(host, port)
+      fc.sendRequest(blockId)
+      fc.waitForClose()
+      fc.close()
+    } catch {
+      // Handle any socket-related exceptions in FileClient
+      case e: Exception => {
+        logError("Shuffle copy of block " + blockId + " from " + host + ":" + port + " failed", e)
+        handler.handleError(blockId)
+      }
+    }
+  }
+
+  def getBlock(cmId: ConnectionManagerId, blockId: String,
+      resultCollectCallback: (String, Long, ByteBuf) => Unit) {
+    getBlock(cmId.host, cmId.port, blockId, resultCollectCallback)
   }
 
   def getBlocks(cmId: ConnectionManagerId,
@@ -44,20 +78,18 @@ private[spark] object ShuffleCopier extends Logging {
       logDebug("Received Block: " + header.blockId + " (" + header.fileLen + "B)");
       resultCollectCallBack(header.blockId, header.fileLen.toLong, in.readBytes(header.fileLen))
     }
-  }
 
-  def echoResultCollectCallBack(blockId: String, size: Long, content: ByteBuf) {
-    logInfo("File: " + blockId + " content is : \" " + content.toString(CharsetUtil.UTF_8) + "\"")
+    override def handleError(blockId: String) {
+      if (!isComplete) {
+        resultCollectCallBack(blockId, -1, null)
+      }
+    }
   }
 
-  def runGetBlock(host:String, port:Int, file:String){
-    val handler = new ShuffleClientHandler(echoResultCollectCallBack)
-    val fc = new FileClient(handler)
-    fc.init();
-    fc.connect(host, port)
-    fc.sendRequest(file)
-    fc.waitForClose();
-    fc.close()
+  def echoResultCollectCallBack(blockId: String, size: Long, content: ByteBuf) {
+    if (size != -1) {
+      logInfo("File: " + blockId + " content is : \" " + content.toString(CharsetUtil.UTF_8) + "\"")
+    }
   }
 
   def main(args: Array[String]) {
@@ -71,14 +103,16 @@ private[spark] object ShuffleCopier extends Logging {
     val threads = if (args.length > 3) args(3).toInt else 10
 
     val copiers = Executors.newFixedThreadPool(80)
-    for (i <- Range(0, threads)) {
-      val runnable = new Runnable() {
+    val tasks = (for (i <- Range(0, threads)) yield { 
+      Executors.callable(new Runnable() {
         def run() {
-          runGetBlock(host, port, file)
+          val copier = new ShuffleCopier()
+          copier.getBlock(host, port, file, echoResultCollectCallBack)
         }
-      }
-      copiers.execute(runnable)
-    }
+      })
+    }).asJava
+    copiers.invokeAll(tasks)
     copiers.shutdown
+    System.exit(0)
   }
 }
diff --git a/core/src/main/scala/spark/network/netty/ShuffleSender.scala b/core/src/main/scala/spark/network/netty/ShuffleSender.scala
index d6fa4b1e80..cdf88b03a0 100644
--- a/core/src/main/scala/spark/network/netty/ShuffleSender.scala
+++ b/core/src/main/scala/spark/network/netty/ShuffleSender.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.network.netty
 
 import java.io.File
diff --git a/core/src/main/scala/spark/package.scala b/core/src/main/scala/spark/package.scala
index 389ec4da3e..b244bfbf06 100644
--- a/core/src/main/scala/spark/package.scala
+++ b/core/src/main/scala/spark/package.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * Core Spark functionality. [[spark.SparkContext]] serves as the main entry point to Spark, while
  * [[spark.RDD]] is the data type representing a distributed collection, and provides most
diff --git a/core/src/main/scala/spark/partial/ApproximateActionListener.scala b/core/src/main/scala/spark/partial/ApproximateActionListener.scala
index de2dce161a..691d939150 100644
--- a/core/src/main/scala/spark/partial/ApproximateActionListener.scala
+++ b/core/src/main/scala/spark/partial/ApproximateActionListener.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 import spark._
diff --git a/core/src/main/scala/spark/partial/ApproximateEvaluator.scala b/core/src/main/scala/spark/partial/ApproximateEvaluator.scala
index 75713b2eaa..5eae144dfb 100644
--- a/core/src/main/scala/spark/partial/ApproximateEvaluator.scala
+++ b/core/src/main/scala/spark/partial/ApproximateEvaluator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 /**
diff --git a/core/src/main/scala/spark/partial/BoundedDouble.scala b/core/src/main/scala/spark/partial/BoundedDouble.scala
index 463c33d6e2..8bdbe6c012 100644
--- a/core/src/main/scala/spark/partial/BoundedDouble.scala
+++ b/core/src/main/scala/spark/partial/BoundedDouble.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 /**
diff --git a/core/src/main/scala/spark/partial/CountEvaluator.scala b/core/src/main/scala/spark/partial/CountEvaluator.scala
index daf2c5170c..6aa92094eb 100644
--- a/core/src/main/scala/spark/partial/CountEvaluator.scala
+++ b/core/src/main/scala/spark/partial/CountEvaluator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 import cern.jet.stat.Probability
diff --git a/core/src/main/scala/spark/partial/GroupedCountEvaluator.scala b/core/src/main/scala/spark/partial/GroupedCountEvaluator.scala
index 01fbb8a11b..ebe2e5a1e3 100644
--- a/core/src/main/scala/spark/partial/GroupedCountEvaluator.scala
+++ b/core/src/main/scala/spark/partial/GroupedCountEvaluator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 import java.util.{HashMap => JHashMap}
diff --git a/core/src/main/scala/spark/partial/GroupedMeanEvaluator.scala b/core/src/main/scala/spark/partial/GroupedMeanEvaluator.scala
index c622df5220..2dadbbd5fb 100644
--- a/core/src/main/scala/spark/partial/GroupedMeanEvaluator.scala
+++ b/core/src/main/scala/spark/partial/GroupedMeanEvaluator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 import java.util.{HashMap => JHashMap}
diff --git a/core/src/main/scala/spark/partial/GroupedSumEvaluator.scala b/core/src/main/scala/spark/partial/GroupedSumEvaluator.scala
index 20fa55cff2..ae2b63f7cb 100644
--- a/core/src/main/scala/spark/partial/GroupedSumEvaluator.scala
+++ b/core/src/main/scala/spark/partial/GroupedSumEvaluator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 import java.util.{HashMap => JHashMap}
diff --git a/core/src/main/scala/spark/partial/MeanEvaluator.scala b/core/src/main/scala/spark/partial/MeanEvaluator.scala
index 762c85400d..5ddcad7075 100644
--- a/core/src/main/scala/spark/partial/MeanEvaluator.scala
+++ b/core/src/main/scala/spark/partial/MeanEvaluator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 import cern.jet.stat.Probability
diff --git a/core/src/main/scala/spark/partial/PartialResult.scala b/core/src/main/scala/spark/partial/PartialResult.scala
index 200ed4ea1e..922a9f9bc6 100644
--- a/core/src/main/scala/spark/partial/PartialResult.scala
+++ b/core/src/main/scala/spark/partial/PartialResult.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 class PartialResult[R](initialVal: R, isFinal: Boolean) {
diff --git a/core/src/main/scala/spark/partial/StudentTCacher.scala b/core/src/main/scala/spark/partial/StudentTCacher.scala
index 443abba5cd..f3bb987d46 100644
--- a/core/src/main/scala/spark/partial/StudentTCacher.scala
+++ b/core/src/main/scala/spark/partial/StudentTCacher.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 import cern.jet.stat.Probability
diff --git a/core/src/main/scala/spark/partial/SumEvaluator.scala b/core/src/main/scala/spark/partial/SumEvaluator.scala
index 58fb60f441..4083abef03 100644
--- a/core/src/main/scala/spark/partial/SumEvaluator.scala
+++ b/core/src/main/scala/spark/partial/SumEvaluator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.partial
 
 import cern.jet.stat.Probability
diff --git a/core/src/main/scala/spark/rdd/BlockRDD.scala b/core/src/main/scala/spark/rdd/BlockRDD.scala
index 719d4bf03e..0ebb722d73 100644
--- a/core/src/main/scala/spark/rdd/BlockRDD.scala
+++ b/core/src/main/scala/spark/rdd/BlockRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{RDD, SparkContext, SparkEnv, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/CartesianRDD.scala b/core/src/main/scala/spark/rdd/CartesianRDD.scala
index 38600b8be4..150e5bca29 100644
--- a/core/src/main/scala/spark/rdd/CartesianRDD.scala
+++ b/core/src/main/scala/spark/rdd/CartesianRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import java.io.{ObjectOutputStream, IOException}
diff --git a/core/src/main/scala/spark/rdd/CheckpointRDD.scala b/core/src/main/scala/spark/rdd/CheckpointRDD.scala
index 377b1bdbe0..6794e0e201 100644
--- a/core/src/main/scala/spark/rdd/CheckpointRDD.scala
+++ b/core/src/main/scala/spark/rdd/CheckpointRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark._
diff --git a/core/src/main/scala/spark/rdd/CoGroupedRDD.scala b/core/src/main/scala/spark/rdd/CoGroupedRDD.scala
index 8966f9f86e..c540cd36eb 100644
--- a/core/src/main/scala/spark/rdd/CoGroupedRDD.scala
+++ b/core/src/main/scala/spark/rdd/CoGroupedRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import java.io.{ObjectOutputStream, IOException}
diff --git a/core/src/main/scala/spark/rdd/CoalescedRDD.scala b/core/src/main/scala/spark/rdd/CoalescedRDD.scala
index 6d862c0c28..2b5bf18541 100644
--- a/core/src/main/scala/spark/rdd/CoalescedRDD.scala
+++ b/core/src/main/scala/spark/rdd/CoalescedRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{Dependency, OneToOneDependency, NarrowDependency, RDD, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/EmptyRDD.scala b/core/src/main/scala/spark/rdd/EmptyRDD.scala
index e4dd3a7fa7..d7d4db5d30 100644
--- a/core/src/main/scala/spark/rdd/EmptyRDD.scala
+++ b/core/src/main/scala/spark/rdd/EmptyRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{RDD, SparkContext, SparkEnv, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/FilteredRDD.scala b/core/src/main/scala/spark/rdd/FilteredRDD.scala
index c84ec39d21..783508cfd1 100644
--- a/core/src/main/scala/spark/rdd/FilteredRDD.scala
+++ b/core/src/main/scala/spark/rdd/FilteredRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{OneToOneDependency, RDD, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/FlatMappedRDD.scala b/core/src/main/scala/spark/rdd/FlatMappedRDD.scala
index 8ebc778925..ed75eac3ff 100644
--- a/core/src/main/scala/spark/rdd/FlatMappedRDD.scala
+++ b/core/src/main/scala/spark/rdd/FlatMappedRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{RDD, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/GlommedRDD.scala b/core/src/main/scala/spark/rdd/GlommedRDD.scala
index e16c7ba881..1573f8a289 100644
--- a/core/src/main/scala/spark/rdd/GlommedRDD.scala
+++ b/core/src/main/scala/spark/rdd/GlommedRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{RDD, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/HadoopRDD.scala b/core/src/main/scala/spark/rdd/HadoopRDD.scala
index cbf5512e24..d0fdeb741e 100644
--- a/core/src/main/scala/spark/rdd/HadoopRDD.scala
+++ b/core/src/main/scala/spark/rdd/HadoopRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import java.io.EOFException
@@ -15,6 +32,7 @@ import org.apache.hadoop.mapred.RecordReader
 import org.apache.hadoop.mapred.Reporter
 import org.apache.hadoop.util.ReflectionUtils
 
+import spark.deploy.SparkHadoopUtil
 import spark.{Dependency, Logging, Partition, RDD, SerializableWritable, SparkContext, TaskContext}
 import spark.util.NextIterator
 import org.apache.hadoop.conf.Configurable
@@ -50,6 +68,7 @@ class HadoopRDD[K, V](
   private val confBroadcast = sc.broadcast(new SerializableWritable(conf))
 
   override def getPartitions: Array[Partition] = {
+    SparkHadoopUtil.addCredentials(conf);
     val inputFormat = createInputFormat(conf)
     if (inputFormat.isInstanceOf[Configurable]) {
       inputFormat.asInstanceOf[Configurable].setConf(conf)
diff --git a/core/src/main/scala/spark/rdd/JdbcRDD.scala b/core/src/main/scala/spark/rdd/JdbcRDD.scala
index a50f407737..59132437d2 100644
--- a/core/src/main/scala/spark/rdd/JdbcRDD.scala
+++ b/core/src/main/scala/spark/rdd/JdbcRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import java.sql.{Connection, ResultSet}
diff --git a/core/src/main/scala/spark/rdd/MapPartitionsRDD.scala b/core/src/main/scala/spark/rdd/MapPartitionsRDD.scala
index d283c5b2bb..af8f0a112f 100644
--- a/core/src/main/scala/spark/rdd/MapPartitionsRDD.scala
+++ b/core/src/main/scala/spark/rdd/MapPartitionsRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{RDD, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/MapPartitionsWithIndexRDD.scala b/core/src/main/scala/spark/rdd/MapPartitionsWithIndexRDD.scala
index afb7504ba1..3b4e9518fd 100644
--- a/core/src/main/scala/spark/rdd/MapPartitionsWithIndexRDD.scala
+++ b/core/src/main/scala/spark/rdd/MapPartitionsWithIndexRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{RDD, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/MappedRDD.scala b/core/src/main/scala/spark/rdd/MappedRDD.scala
index af07311b6d..8b411dd85d 100644
--- a/core/src/main/scala/spark/rdd/MappedRDD.scala
+++ b/core/src/main/scala/spark/rdd/MappedRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{RDD, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/NewHadoopRDD.scala b/core/src/main/scala/spark/rdd/NewHadoopRDD.scala
index 901d01ef30..17fe805fd4 100644
--- a/core/src/main/scala/spark/rdd/NewHadoopRDD.scala
+++ b/core/src/main/scala/spark/rdd/NewHadoopRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import java.text.SimpleDateFormat
diff --git a/core/src/main/scala/spark/rdd/ParallelCollectionRDD.scala b/core/src/main/scala/spark/rdd/ParallelCollectionRDD.scala
index 07585a88ce..16ba0c26f8 100644
--- a/core/src/main/scala/spark/rdd/ParallelCollectionRDD.scala
+++ b/core/src/main/scala/spark/rdd/ParallelCollectionRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import scala.collection.immutable.NumericRange
diff --git a/core/src/main/scala/spark/rdd/PartitionPruningRDD.scala b/core/src/main/scala/spark/rdd/PartitionPruningRDD.scala
index 41ff62dd22..191cfde565 100644
--- a/core/src/main/scala/spark/rdd/PartitionPruningRDD.scala
+++ b/core/src/main/scala/spark/rdd/PartitionPruningRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{NarrowDependency, RDD, SparkEnv, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/PipedRDD.scala b/core/src/main/scala/spark/rdd/PipedRDD.scala
index c0baf43d43..2cefdc78b0 100644
--- a/core/src/main/scala/spark/rdd/PipedRDD.scala
+++ b/core/src/main/scala/spark/rdd/PipedRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import java.io.PrintWriter
diff --git a/core/src/main/scala/spark/rdd/SampledRDD.scala b/core/src/main/scala/spark/rdd/SampledRDD.scala
index 243673f151..574c9b141d 100644
--- a/core/src/main/scala/spark/rdd/SampledRDD.scala
+++ b/core/src/main/scala/spark/rdd/SampledRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import java.util.Random
diff --git a/core/src/main/scala/spark/rdd/ShuffledRDD.scala b/core/src/main/scala/spark/rdd/ShuffledRDD.scala
index c7d1926b83..0137f80953 100644
--- a/core/src/main/scala/spark/rdd/ShuffledRDD.scala
+++ b/core/src/main/scala/spark/rdd/ShuffledRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{Partitioner, RDD, SparkEnv, ShuffleDependency, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/SubtractedRDD.scala b/core/src/main/scala/spark/rdd/SubtractedRDD.scala
index 8a9efc5da2..0402b9f250 100644
--- a/core/src/main/scala/spark/rdd/SubtractedRDD.scala
+++ b/core/src/main/scala/spark/rdd/SubtractedRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import java.util.{HashMap => JHashMap}
diff --git a/core/src/main/scala/spark/rdd/UnionRDD.scala b/core/src/main/scala/spark/rdd/UnionRDD.scala
index 2c52a67e22..2776826f18 100644
--- a/core/src/main/scala/spark/rdd/UnionRDD.scala
+++ b/core/src/main/scala/spark/rdd/UnionRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import scala.collection.mutable.ArrayBuffer
diff --git a/core/src/main/scala/spark/rdd/ZippedPartitionsRDD.scala b/core/src/main/scala/spark/rdd/ZippedPartitionsRDD.scala
index b234428ab2..6a4fa13ad6 100644
--- a/core/src/main/scala/spark/rdd/ZippedPartitionsRDD.scala
+++ b/core/src/main/scala/spark/rdd/ZippedPartitionsRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{Utils, OneToOneDependency, RDD, SparkContext, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/rdd/ZippedRDD.scala b/core/src/main/scala/spark/rdd/ZippedRDD.scala
index f728e93d24..b1c43b3195 100644
--- a/core/src/main/scala/spark/rdd/ZippedRDD.scala
+++ b/core/src/main/scala/spark/rdd/ZippedRDD.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.rdd
 
 import spark.{Utils, OneToOneDependency, RDD, SparkContext, Partition, TaskContext}
diff --git a/core/src/main/scala/spark/scheduler/ActiveJob.scala b/core/src/main/scala/spark/scheduler/ActiveJob.scala
index 105eaecb22..71cc94edb6 100644
--- a/core/src/main/scala/spark/scheduler/ActiveJob.scala
+++ b/core/src/main/scala/spark/scheduler/ActiveJob.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import spark.TaskContext
diff --git a/core/src/main/scala/spark/scheduler/DAGScheduler.scala b/core/src/main/scala/spark/scheduler/DAGScheduler.scala
index 7feeb97542..29e879aa42 100644
--- a/core/src/main/scala/spark/scheduler/DAGScheduler.scala
+++ b/core/src/main/scala/spark/scheduler/DAGScheduler.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import cluster.TaskInfo
@@ -150,7 +167,13 @@ class DAGScheduler(
    * as a result stage for the final RDD used directly in an action. The stage will also be given
    * the provided priority.
    */
-  private def newStage(rdd: RDD[_], shuffleDep: Option[ShuffleDependency[_,_]], priority: Int): Stage = {
+  private def newStage(
+      rdd: RDD[_],
+      shuffleDep: Option[ShuffleDependency[_,_]],
+      priority: Int,
+      callSite: Option[String] = None)
+    : Stage =
+  {
     if (shuffleDep != None) {
       // Kind of ugly: need to register RDDs with the cache and map output tracker here
       // since we can't do it in the RDD constructor because # of partitions is unknown
@@ -158,7 +181,7 @@ class DAGScheduler(
       mapOutputTracker.registerShuffle(shuffleDep.get.shuffleId, rdd.partitions.size)
     }
     val id = nextStageId.getAndIncrement()
-    val stage = new Stage(id, rdd, shuffleDep, getParentStages(rdd, priority), priority)
+    val stage = new Stage(id, rdd, shuffleDep, getParentStages(rdd, priority), priority, callSite)
     idToStage(id) = stage
     stageToInfos(stage) = StageInfo(stage)
     stage
@@ -251,12 +274,21 @@ class DAGScheduler(
     if (partitions.size == 0) {
       return
     }
+
+    // Check to make sure we are not launching a task on a partition that does not exist.
+    val maxPartitions = finalRdd.partitions.length
+    partitions.find(p => p >= maxPartitions).foreach { p =>
+      throw new IllegalArgumentException(
+        "Attempting to access a non-existent partition: " + p + ". " +
+        "Total number of partitions: " + maxPartitions)
+    }
+
     val (toSubmit, waiter) = prepareJob(
         finalRdd, func, partitions, callSite, allowLocal, resultHandler, properties)
     eventQueue.put(toSubmit)
     waiter.awaitResult() match {
       case JobSucceeded => {}
-      case JobFailed(exception: Exception) =>
+      case JobFailed(exception: Exception, _) =>
         logInfo("Failed to run " + callSite)
         throw exception
     }
@@ -286,18 +318,19 @@ class DAGScheduler(
     event match {
       case JobSubmitted(finalRDD, func, partitions, allowLocal, callSite, listener, properties) =>
         val runId = nextRunId.getAndIncrement()
-        val finalStage = newStage(finalRDD, None, runId)
+        val finalStage = newStage(finalRDD, None, runId, Some(callSite))
         val job = new ActiveJob(runId, finalStage, func, partitions, callSite, listener, properties)
         clearCacheLocs()
         logInfo("Got job " + job.runId + " (" + callSite + ") with " + partitions.length +
                 " output partitions (allowLocal=" + allowLocal + ")")
-        logInfo("Final stage: " + finalStage + " (" + finalStage.origin + ")")
+        logInfo("Final stage: " + finalStage + " (" + finalStage.name + ")")
         logInfo("Parents of final stage: " + finalStage.parents)
         logInfo("Missing parents: " + getMissingParentStages(finalStage))
         if (allowLocal && finalStage.parents.size == 0 && partitions.length == 1) {
           // Compute very short actions like first() or take() with no parent stages locally.
           runLocally(job)
         } else {
+          sparkListeners.foreach(_.onJobStart(SparkListenerJobStart(job, properties)))
           idToActiveJob(runId) = job
           activeJobs += job
           resultStageToJob(finalStage) = job
@@ -311,6 +344,8 @@ class DAGScheduler(
         handleExecutorLost(execId)
 
       case completion: CompletionEvent =>
+        sparkListeners.foreach(_.onTaskEnd(SparkListenerTaskEnd(completion.task,
+                               completion.reason, completion.taskInfo, completion.taskMetrics)))
         handleTaskCompletion(completion)
 
       case TaskSetFailed(taskSet, reason) =>
@@ -321,6 +356,7 @@ class DAGScheduler(
         for (job <- activeJobs) {
           val error = new SparkException("Job cancelled because SparkContext was shut down")
           job.listener.jobFailed(error)
+          sparkListeners.foreach(_.onJobEnd(SparkListenerJobEnd(job, JobFailed(error, None))))
         }
         return true
     }
@@ -468,6 +504,7 @@ class DAGScheduler(
       }
     }
     if (tasks.size > 0) {
+      sparkListeners.foreach(_.onStageSubmitted(SparkListenerStageSubmitted(stage, tasks.size)))
       logInfo("Submitting " + tasks.size + " missing tasks from " + stage + " (" + stage.rdd + ")")
       myPending ++= tasks
       logDebug("New pending tasks: " + myPending)
@@ -497,7 +534,8 @@ class DAGScheduler(
         case Some(t) => "%.03f".format((System.currentTimeMillis() - t) / 1000.0)
         case _ => "Unkown"
       }
-      logInfo("%s (%s) finished in %s s".format(stage, stage.origin, serviceTime))
+      logInfo("%s (%s) finished in %s s".format(stage, stage.name, serviceTime))
+      stage.completionTime = Some(System.currentTimeMillis)
       val stageComp = StageCompleted(stageToInfos(stage))
       sparkListeners.foreach{_.onStageCompleted(stageComp)}
       running -= stage
@@ -519,9 +557,11 @@ class DAGScheduler(
                   job.numFinished += 1
                   // If the whole job has finished, remove it
                   if (job.numFinished == job.numPartitions) {
+                    idToActiveJob -= stage.priority
                     activeJobs -= job
                     resultStageToJob -= stage
                     markStageAsFinished(stage)
+                    sparkListeners.foreach(_.onJobEnd(SparkListenerJobEnd(job, JobSucceeded)))
                   }
                   job.listener.taskSucceeded(rt.outputId, event.result)
                 }
@@ -560,7 +600,7 @@ class DAGScheduler(
               if (stage.outputLocs.count(_ == Nil) != 0) {
                 // Some tasks had failed; let's resubmit this stage
                 // TODO: Lower-level scheduler should also deal with this
-                logInfo("Resubmitting " + stage + " (" + stage.origin +
+                logInfo("Resubmitting " + stage + " (" + stage.name +
                   ") because some of its tasks had failed: " +
                   stage.outputLocs.zipWithIndex.filter(_._1 == Nil).map(_._2).mkString(", "))
                 submitStage(stage)
@@ -592,7 +632,7 @@ class DAGScheduler(
         running -= failedStage
         failed += failedStage
         // TODO: Cancel running tasks in the stage
-        logInfo("Marking " + failedStage + " (" + failedStage.origin +
+        logInfo("Marking " + failedStage + " (" + failedStage.name +
           ") for resubmision due to a fetch failure")
         // Mark the map whose fetch failed as broken in the map stage
         val mapStage = shuffleToMapStage(shuffleId)
@@ -600,7 +640,7 @@ class DAGScheduler(
           mapStage.removeOutputLoc(mapId, bmAddress)
           mapOutputTracker.unregisterMapOutput(shuffleId, mapId, bmAddress)
         }
-        logInfo("The failed fetch was from " + mapStage + " (" + mapStage.origin +
+        logInfo("The failed fetch was from " + mapStage + " (" + mapStage.name +
           "); marking it for resubmission")
         failed += mapStage
         // Remember that a fetch failed now; this is used to resubmit the broken
@@ -611,8 +651,11 @@ class DAGScheduler(
           handleExecutorLost(bmAddress.executorId, Some(task.generation))
         }
 
+      case ExceptionFailure(className, description, stackTrace, metrics) =>
+        // Do nothing here, left up to the TaskScheduler to decide how to handle user failures
+
       case other =>
-        // Non-fetch failure -- probably a bug in user code; abort all jobs depending on this stage
+        // Unrecognized failure - abort all jobs depending on this stage
         abortStage(idToStage(task.stageId), task + " failed: " + other)
     }
   }
@@ -645,7 +688,7 @@ class DAGScheduler(
                "(generation " + currentGeneration + ")")
     }
   }
-  
+
   private def handleExecutorGained(execId: String, hostPort: String) {
     // remove from failedGeneration(execId) ?
     if (failedGeneration.contains(execId)) {
@@ -660,9 +703,13 @@ class DAGScheduler(
    */
   private def abortStage(failedStage: Stage, reason: String) {
     val dependentStages = resultStageToJob.keys.filter(x => stageDependsOn(x, failedStage)).toSeq
+    failedStage.completionTime = Some(System.currentTimeMillis())
     for (resultStage <- dependentStages) {
       val job = resultStageToJob(resultStage)
-      job.listener.jobFailed(new SparkException("Job failed: " + reason))
+      val error = new SparkException("Job failed: " + reason)
+      job.listener.jobFailed(error)
+      sparkListeners.foreach(_.onJobEnd(SparkListenerJobEnd(job, JobFailed(error, Some(failedStage)))))
+      idToActiveJob -= resultStage.priority
       activeJobs -= job
       resultStageToJob -= resultStage
     }
@@ -739,6 +786,10 @@ class DAGScheduler(
     sizeBefore = pendingTasks.size
     pendingTasks.clearOldValues(cleanupTime)
     logInfo("pendingTasks " + sizeBefore + " --> " + pendingTasks.size)
+
+    sizeBefore = stageToInfos.size
+    stageToInfos.clearOldValues(cleanupTime)
+    logInfo("stageToInfos " + sizeBefore + " --> " + stageToInfos.size)
   }
 
   def stop() {
diff --git a/core/src/main/scala/spark/scheduler/DAGSchedulerEvent.scala b/core/src/main/scala/spark/scheduler/DAGSchedulerEvent.scala
index acad915f13..506c87f65b 100644
--- a/core/src/main/scala/spark/scheduler/DAGSchedulerEvent.scala
+++ b/core/src/main/scala/spark/scheduler/DAGSchedulerEvent.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import java.util.Properties
diff --git a/core/src/main/scala/spark/scheduler/InputFormatInfo.scala b/core/src/main/scala/spark/scheduler/InputFormatInfo.scala
index 287f731787..65f8c3200e 100644
--- a/core/src/main/scala/spark/scheduler/InputFormatInfo.scala
+++ b/core/src/main/scala/spark/scheduler/InputFormatInfo.scala
@@ -1,13 +1,32 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import spark.Logging
 import scala.collection.immutable.Set
 import org.apache.hadoop.mapred.{FileInputFormat, JobConf}
+import org.apache.hadoop.security.UserGroupInformation
 import org.apache.hadoop.util.ReflectionUtils
 import org.apache.hadoop.mapreduce.Job
 import org.apache.hadoop.conf.Configuration
 import scala.collection.mutable.{ArrayBuffer, HashMap, HashSet}
 import scala.collection.JavaConversions._
+import spark.deploy.SparkHadoopUtil
 
 
 /**
@@ -70,6 +89,7 @@ class InputFormatInfo(val configuration: Configuration, val inputFormatClazz: Cl
   // This method does not expect failures, since validate has already passed ...
   private def prefLocsFromMapreduceInputFormat(): Set[SplitInfo] = {
     val conf = new JobConf(configuration)
+    SparkHadoopUtil.addCredentials(conf);
     FileInputFormat.setInputPaths(conf, path)
 
     val instance: org.apache.hadoop.mapreduce.InputFormat[_, _] =
@@ -89,6 +109,7 @@ class InputFormatInfo(val configuration: Configuration, val inputFormatClazz: Cl
   // This method does not expect failures, since validate has already passed ...
   private def prefLocsFromMapredInputFormat(): Set[SplitInfo] = {
     val jobConf = new JobConf(configuration)
+    SparkHadoopUtil.addCredentials(jobConf);
     FileInputFormat.setInputPaths(jobConf, path)
 
     val instance: org.apache.hadoop.mapred.InputFormat[_, _] =
diff --git a/core/src/main/scala/spark/scheduler/JobListener.scala b/core/src/main/scala/spark/scheduler/JobListener.scala
index f46b9d551d..af108b8fec 100644
--- a/core/src/main/scala/spark/scheduler/JobListener.scala
+++ b/core/src/main/scala/spark/scheduler/JobListener.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 /**
diff --git a/core/src/main/scala/spark/scheduler/JobLogger.scala b/core/src/main/scala/spark/scheduler/JobLogger.scala
new file mode 100644
index 0000000000..85b5ddd4a8
--- /dev/null
+++ b/core/src/main/scala/spark/scheduler/JobLogger.scala
@@ -0,0 +1,323 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.scheduler
+
+import java.io.PrintWriter
+import java.io.File
+import java.io.FileNotFoundException
+import java.text.SimpleDateFormat
+import java.util.{Date, Properties}
+import java.util.concurrent.LinkedBlockingQueue
+import scala.collection.mutable.{Map, HashMap, ListBuffer}
+import scala.io.Source
+import spark._
+import spark.executor.TaskMetrics
+import spark.scheduler.cluster.TaskInfo
+
+// Used to record runtime information for each job, including RDD graph 
+// tasks' start/stop shuffle information and information from outside
+
+class JobLogger(val logDirName: String) extends SparkListener with Logging {
+  private val logDir =  
+    if (System.getenv("SPARK_LOG_DIR") != null)  
+      System.getenv("SPARK_LOG_DIR")
+    else 
+      "/tmp/spark"
+  private val jobIDToPrintWriter = new HashMap[Int, PrintWriter] 
+  private val stageIDToJobID = new HashMap[Int, Int]
+  private val jobIDToStages = new HashMap[Int, ListBuffer[Stage]]
+  private val DATE_FORMAT = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss")
+  private val eventQueue = new LinkedBlockingQueue[SparkListenerEvents]
+  
+  createLogDir()
+  def this() = this(String.valueOf(System.currentTimeMillis()))
+  
+  def getLogDir = logDir
+  def getJobIDtoPrintWriter = jobIDToPrintWriter
+  def getStageIDToJobID = stageIDToJobID
+  def getJobIDToStages = jobIDToStages
+  def getEventQueue = eventQueue
+  
+  new Thread("JobLogger") {
+    setDaemon(true)
+    override def run() {
+      while (true) {
+        val event = eventQueue.take
+        logDebug("Got event of type " + event.getClass.getName)
+        event match {
+          case SparkListenerJobStart(job, properties) =>
+            processJobStartEvent(job, properties)
+          case SparkListenerStageSubmitted(stage, taskSize) =>
+            processStageSubmittedEvent(stage, taskSize)
+          case StageCompleted(stageInfo) =>
+            processStageCompletedEvent(stageInfo)
+          case SparkListenerJobEnd(job, result) =>
+            processJobEndEvent(job, result)
+          case SparkListenerTaskEnd(task, reason, taskInfo, taskMetrics) =>
+            processTaskEndEvent(task, reason, taskInfo, taskMetrics)
+          case _ =>
+        }
+      }
+    }
+  }.start()
+
+  // Create a folder for log files, the folder's name is the creation time of the jobLogger
+  protected def createLogDir() {
+    val dir = new File(logDir + "/" + logDirName + "/")
+    if (dir.exists()) {
+      return
+    }
+    if (dir.mkdirs() == false) {
+      logError("create log directory error:" + logDir + "/" + logDirName + "/")
+    }
+  }
+  
+  // Create a log file for one job, the file name is the jobID
+  protected def createLogWriter(jobID: Int) {
+    try{
+      val fileWriter = new PrintWriter(logDir + "/" + logDirName + "/" + jobID)
+      jobIDToPrintWriter += (jobID -> fileWriter)
+      } catch {
+        case e: FileNotFoundException => e.printStackTrace()
+      }
+  }
+  
+  // Close log file, and clean the stage relationship in stageIDToJobID 
+  protected def closeLogWriter(jobID: Int) = 
+    jobIDToPrintWriter.get(jobID).foreach { fileWriter => 
+      fileWriter.close()
+      jobIDToStages.get(jobID).foreach(_.foreach{ stage => 
+        stageIDToJobID -= stage.id
+      })
+      jobIDToPrintWriter -= jobID
+      jobIDToStages -= jobID
+    }
+  
+  // Write log information to log file, withTime parameter controls whether to recored 
+  // time stamp for the information
+  protected def jobLogInfo(jobID: Int, info: String, withTime: Boolean = true) {
+    var writeInfo = info
+    if (withTime) {
+      val date = new Date(System.currentTimeMillis())
+      writeInfo = DATE_FORMAT.format(date) + ": " +info
+    }
+    jobIDToPrintWriter.get(jobID).foreach(_.println(writeInfo))
+  }
+  
+  protected def stageLogInfo(stageID: Int, info: String, withTime: Boolean = true) = 
+    stageIDToJobID.get(stageID).foreach(jobID => jobLogInfo(jobID, info, withTime))
+
+  protected def buildJobDep(jobID: Int, stage: Stage) {
+    if (stage.priority == jobID) {
+      jobIDToStages.get(jobID) match {
+        case Some(stageList) => stageList += stage
+        case None => val stageList = new  ListBuffer[Stage]
+                     stageList += stage
+                     jobIDToStages += (jobID -> stageList)
+      }
+      stageIDToJobID += (stage.id -> jobID)
+      stage.parents.foreach(buildJobDep(jobID, _))
+    }
+  }
+
+  protected def recordStageDep(jobID: Int) {
+    def getRddsInStage(rdd: RDD[_]): ListBuffer[RDD[_]] = {
+      var rddList = new ListBuffer[RDD[_]]
+      rddList += rdd
+      rdd.dependencies.foreach{ dep => dep match {
+          case shufDep: ShuffleDependency[_,_] =>
+          case _ => rddList ++= getRddsInStage(dep.rdd)
+        }
+      }
+      rddList
+    }
+    jobIDToStages.get(jobID).foreach {_.foreach { stage => 
+        var depRddDesc: String = ""
+        getRddsInStage(stage.rdd).foreach { rdd => 
+          depRddDesc += rdd.id + ","
+        }
+        var depStageDesc: String = ""
+        stage.parents.foreach { stage => 
+          depStageDesc += "(" + stage.id + "," + stage.shuffleDep.get.shuffleId + ")"
+        }
+        jobLogInfo(jobID, "STAGE_ID=" + stage.id + " RDD_DEP=(" + 
+                   depRddDesc.substring(0, depRddDesc.length - 1) + ")" + 
+                   " STAGE_DEP=" + depStageDesc, false)
+      }
+    }
+  }
+  
+  // Generate indents and convert to String
+  protected def indentString(indent: Int) = {
+    val sb = new StringBuilder()
+    for (i <- 1 to indent) {
+      sb.append(" ")
+    }
+    sb.toString()
+  }
+  
+  protected def getRddName(rdd: RDD[_]) = {
+    var rddName = rdd.getClass.getName
+    if (rdd.name != null) {
+      rddName = rdd.name 
+    }
+    rddName
+  }
+  
+  protected def recordRddInStageGraph(jobID: Int, rdd: RDD[_], indent: Int) {
+    val rddInfo = "RDD_ID=" + rdd.id + "(" + getRddName(rdd) + "," + rdd.generator + ")"
+    jobLogInfo(jobID, indentString(indent) + rddInfo, false)
+    rdd.dependencies.foreach{ dep => dep match {
+        case shufDep: ShuffleDependency[_,_] => 
+          val depInfo = "SHUFFLE_ID=" + shufDep.shuffleId
+          jobLogInfo(jobID, indentString(indent + 1) + depInfo, false)
+        case _ => recordRddInStageGraph(jobID, dep.rdd, indent + 1)
+      }
+    }
+  }
+  
+  protected def recordStageDepGraph(jobID: Int, stage: Stage, indent: Int = 0) {
+    var stageInfo: String = ""
+    if (stage.isShuffleMap) {
+      stageInfo = "STAGE_ID=" + stage.id + " MAP_STAGE SHUFFLE_ID=" + 
+                  stage.shuffleDep.get.shuffleId
+    }else{
+      stageInfo = "STAGE_ID=" + stage.id + " RESULT_STAGE"
+    }
+    if (stage.priority == jobID) {
+      jobLogInfo(jobID, indentString(indent) + stageInfo, false)
+      recordRddInStageGraph(jobID, stage.rdd, indent)
+      stage.parents.foreach(recordStageDepGraph(jobID, _, indent + 2))
+    } else
+      jobLogInfo(jobID, indentString(indent) + stageInfo + " JOB_ID=" + stage.priority, false)
+  }
+  
+  // Record task metrics into job log files
+  protected def recordTaskMetrics(stageID: Int, status: String, 
+                                taskInfo: TaskInfo, taskMetrics: TaskMetrics) {
+    val info = " TID=" + taskInfo.taskId + " STAGE_ID=" + stageID + 
+               " START_TIME=" + taskInfo.launchTime + " FINISH_TIME=" + taskInfo.finishTime + 
+               " EXECUTOR_ID=" + taskInfo.executorId +  " HOST=" + taskMetrics.hostname
+    val executorRunTime = " EXECUTOR_RUN_TIME=" + taskMetrics.executorRunTime
+    val readMetrics = 
+      taskMetrics.shuffleReadMetrics match {
+        case Some(metrics) => 
+          " SHUFFLE_FINISH_TIME=" + metrics.shuffleFinishTime + 
+          " BLOCK_FETCHED_TOTAL=" + metrics.totalBlocksFetched + 
+          " BLOCK_FETCHED_LOCAL=" + metrics.localBlocksFetched + 
+          " BLOCK_FETCHED_REMOTE=" + metrics.remoteBlocksFetched + 
+          " REMOTE_FETCH_WAIT_TIME=" + metrics.fetchWaitTime + 
+          " REMOTE_FETCH_TIME=" + metrics.remoteFetchTime + 
+          " REMOTE_BYTES_READ=" + metrics.remoteBytesRead
+        case None => ""
+      }
+    val writeMetrics = 
+      taskMetrics.shuffleWriteMetrics match {
+        case Some(metrics) => 
+          " SHUFFLE_BYTES_WRITTEN=" + metrics.shuffleBytesWritten
+        case None => ""
+      }
+    stageLogInfo(stageID, status + info + executorRunTime + readMetrics + writeMetrics)
+  }
+  
+  override def onStageSubmitted(stageSubmitted: SparkListenerStageSubmitted) {
+    eventQueue.put(stageSubmitted)
+  }
+
+  protected def processStageSubmittedEvent(stage: Stage, taskSize: Int) {
+    stageLogInfo(stage.id, "STAGE_ID=" + stage.id + " STATUS=SUBMITTED" + " TASK_SIZE=" + taskSize)
+  }
+  
+  override def onStageCompleted(stageCompleted: StageCompleted) {
+    eventQueue.put(stageCompleted)
+  }
+
+  protected def processStageCompletedEvent(stageInfo: StageInfo) {
+    stageLogInfo(stageInfo.stage.id, "STAGE_ID=" + 
+                 stageInfo.stage.id + " STATUS=COMPLETED")
+    
+  }
+  
+  override def onTaskEnd(taskEnd: SparkListenerTaskEnd) {
+    eventQueue.put(taskEnd)
+  }
+
+  protected def processTaskEndEvent(task: Task[_], reason: TaskEndReason, 
+      taskInfo: TaskInfo, taskMetrics: TaskMetrics) {
+    var taskStatus = ""
+    task match {
+      case resultTask: ResultTask[_, _] => taskStatus = "TASK_TYPE=RESULT_TASK"
+      case shuffleMapTask: ShuffleMapTask => taskStatus = "TASK_TYPE=SHUFFLE_MAP_TASK"
+    }
+    reason match {
+      case Success => taskStatus += " STATUS=SUCCESS"
+        recordTaskMetrics(task.stageId, taskStatus, taskInfo, taskMetrics)
+      case Resubmitted => 
+        taskStatus += " STATUS=RESUBMITTED TID=" + taskInfo.taskId + 
+                      " STAGE_ID=" + task.stageId
+        stageLogInfo(task.stageId, taskStatus)
+      case FetchFailed(bmAddress, shuffleId, mapId, reduceId) => 
+        taskStatus += " STATUS=FETCHFAILED TID=" + taskInfo.taskId + " STAGE_ID=" + 
+                      task.stageId + " SHUFFLE_ID=" + shuffleId + " MAP_ID=" + 
+                      mapId + " REDUCE_ID=" + reduceId
+        stageLogInfo(task.stageId, taskStatus)
+      case OtherFailure(message) => 
+        taskStatus += " STATUS=FAILURE TID=" + taskInfo.taskId + 
+                      " STAGE_ID=" + task.stageId + " INFO=" + message
+        stageLogInfo(task.stageId, taskStatus)
+      case _ =>
+    }
+  }
+  
+  override def onJobEnd(jobEnd: SparkListenerJobEnd) {
+    eventQueue.put(jobEnd)
+  }
+
+  protected def processJobEndEvent(job: ActiveJob, reason: JobResult) {
+    var info = "JOB_ID=" + job.runId
+    reason match {
+      case JobSucceeded => info += " STATUS=SUCCESS"
+      case JobFailed(exception, _) =>
+        info += " STATUS=FAILED REASON="
+        exception.getMessage.split("\\s+").foreach(info += _ + "_")
+      case _ =>
+    }
+    jobLogInfo(job.runId, info.substring(0, info.length - 1).toUpperCase)
+    closeLogWriter(job.runId)
+  }
+
+  protected def recordJobProperties(jobID: Int, properties: Properties) {
+    if(properties != null) {
+      val annotation = properties.getProperty("spark.job.annotation", "")
+      jobLogInfo(jobID, annotation, false)
+    }
+  }
+
+  override def onJobStart(jobStart: SparkListenerJobStart) {
+    eventQueue.put(jobStart)
+  }
+ 
+  protected def processJobStartEvent(job: ActiveJob, properties: Properties) {
+    createLogWriter(job.runId)
+    recordJobProperties(job.runId, properties)
+    buildJobDep(job.runId, job.finalStage)
+    recordStageDep(job.runId)
+    recordStageDepGraph(job.runId, job.finalStage) 
+    jobLogInfo(job.runId, "JOB_ID=" + job.runId + " STATUS=STARTED")
+  }
+}
diff --git a/core/src/main/scala/spark/scheduler/JobResult.scala b/core/src/main/scala/spark/scheduler/JobResult.scala
index 654131ee84..a61b335152 100644
--- a/core/src/main/scala/spark/scheduler/JobResult.scala
+++ b/core/src/main/scala/spark/scheduler/JobResult.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 /**
@@ -6,4 +23,4 @@ package spark.scheduler
 private[spark] sealed trait JobResult
 
 private[spark] case object JobSucceeded extends JobResult
-private[spark] case class JobFailed(exception: Exception) extends JobResult
+private[spark] case class JobFailed(exception: Exception, failedStage: Option[Stage]) extends JobResult
diff --git a/core/src/main/scala/spark/scheduler/JobWaiter.scala b/core/src/main/scala/spark/scheduler/JobWaiter.scala
index 3cc6a86345..69cd161c1f 100644
--- a/core/src/main/scala/spark/scheduler/JobWaiter.scala
+++ b/core/src/main/scala/spark/scheduler/JobWaiter.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import scala.collection.mutable.ArrayBuffer
@@ -35,7 +52,7 @@ private[spark] class JobWaiter[T](totalTasks: Int, resultHandler: (Int, T) => Un
         throw new UnsupportedOperationException("jobFailed() called on a finished JobWaiter")
       }
       jobFinished = true
-      jobResult = JobFailed(exception)
+      jobResult = JobFailed(exception, None)
       this.notifyAll()
     }
   }
diff --git a/core/src/main/scala/spark/scheduler/MapStatus.scala b/core/src/main/scala/spark/scheduler/MapStatus.scala
index 203abb917b..2f6a68ee85 100644
--- a/core/src/main/scala/spark/scheduler/MapStatus.scala
+++ b/core/src/main/scala/spark/scheduler/MapStatus.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import spark.storage.BlockManagerId
diff --git a/core/src/main/scala/spark/scheduler/ResultTask.scala b/core/src/main/scala/spark/scheduler/ResultTask.scala
index 83166bce22..361b1e6b91 100644
--- a/core/src/main/scala/spark/scheduler/ResultTask.scala
+++ b/core/src/main/scala/spark/scheduler/ResultTask.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import spark._
diff --git a/core/src/main/scala/spark/scheduler/ShuffleMapTask.scala b/core/src/main/scala/spark/scheduler/ShuffleMapTask.scala
index 95647389c3..1c25605f75 100644
--- a/core/src/main/scala/spark/scheduler/ShuffleMapTask.scala
+++ b/core/src/main/scala/spark/scheduler/ShuffleMapTask.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import java.io._
diff --git a/core/src/main/scala/spark/scheduler/SparkListener.scala b/core/src/main/scala/spark/scheduler/SparkListener.scala
index a65140b145..4fb1c5d42d 100644
--- a/core/src/main/scala/spark/scheduler/SparkListener.scala
+++ b/core/src/main/scala/spark/scheduler/SparkListener.scala
@@ -1,27 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
+import java.util.Properties
 import spark.scheduler.cluster.TaskInfo
 import spark.util.Distribution
-import spark.{Utils, Logging}
+import spark.{Logging, SparkContext, TaskEndReason, Utils}
 import spark.executor.TaskMetrics
 
-trait SparkListener {
-  /**
-   * called when a stage is completed, with information on the completed stage
-   */
-  def onStageCompleted(stageCompleted: StageCompleted)
-}
-
 sealed trait SparkListenerEvents
 
+case class SparkListenerStageSubmitted(stage: Stage, taskSize: Int) extends SparkListenerEvents
+
 case class StageCompleted(val stageInfo: StageInfo) extends SparkListenerEvents
 
+case class SparkListenerTaskEnd(task: Task[_], reason: TaskEndReason, taskInfo: TaskInfo,
+     taskMetrics: TaskMetrics) extends SparkListenerEvents
+
+case class SparkListenerJobStart(job: ActiveJob, properties: Properties = null) 
+     extends SparkListenerEvents
+
+case class SparkListenerJobEnd(job: ActiveJob, jobResult: JobResult) 
+     extends SparkListenerEvents
+
+trait SparkListener {
+  /**
+   * Called when a stage is completed, with information on the completed stage
+   */
+  def onStageCompleted(stageCompleted: StageCompleted) { }
+  
+  /**
+   * Called when a stage is submitted
+   */
+  def onStageSubmitted(stageSubmitted: SparkListenerStageSubmitted) { }
+  
+  /**
+   * Called when a task ends
+   */
+  def onTaskEnd(taskEnd: SparkListenerTaskEnd) { }
+
+  /**
+   * Called when a job starts
+   */
+  def onJobStart(jobStart: SparkListenerJobStart) { }
+  
+  /**
+   * Called when a job ends
+   */
+  def onJobEnd(jobEnd: SparkListenerJobEnd) { }
+  
+}
 
 /**
  * Simple SparkListener that logs a few summary statistics when each stage completes
  */
 class StatsReportListener extends SparkListener with Logging {
-  def onStageCompleted(stageCompleted: StageCompleted) {
+  override def onStageCompleted(stageCompleted: StageCompleted) {
     import spark.scheduler.StatsReportListener._
     implicit val sc = stageCompleted
     this.logInfo("Finished stage: " + stageCompleted.stageInfo)
@@ -36,6 +85,7 @@ class StatsReportListener extends SparkListener with Logging {
     showBytesDistribution("task result size:", (_, metric) => Some(metric.resultSize))
 
     //runtime breakdown
+
     val runtimePcts = stageCompleted.stageInfo.taskInfos.map{
       case (info, metrics) => RuntimePercentage(info.duration, metrics)
     }
diff --git a/core/src/main/scala/spark/scheduler/SplitInfo.scala b/core/src/main/scala/spark/scheduler/SplitInfo.scala
index 6abfb7a1f7..4e3661ec5d 100644
--- a/core/src/main/scala/spark/scheduler/SplitInfo.scala
+++ b/core/src/main/scala/spark/scheduler/SplitInfo.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import collection.mutable.ArrayBuffer
diff --git a/core/src/main/scala/spark/scheduler/Stage.scala b/core/src/main/scala/spark/scheduler/Stage.scala
index 7fc9e13fd9..5428daeb94 100644
--- a/core/src/main/scala/spark/scheduler/Stage.scala
+++ b/core/src/main/scala/spark/scheduler/Stage.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import java.net.URI
@@ -24,7 +41,8 @@ private[spark] class Stage(
     val rdd: RDD[_],
     val shuffleDep: Option[ShuffleDependency[_,_]],  // Output shuffle if stage is a map stage
     val parents: List[Stage],
-    val priority: Int)
+    val priority: Int,
+    callSite: Option[String])
   extends Logging {
 
   val isShuffleMap = shuffleDep != None
@@ -34,6 +52,7 @@ private[spark] class Stage(
 
   /** When first task was submitted to scheduler. */
   var submissionTime: Option[Long] = None
+  var completionTime: Option[Long] = None
 
   private var nextAttemptId = 0
 
@@ -84,7 +103,7 @@ private[spark] class Stage(
     return id
   }
 
-  def origin: String = rdd.origin
+  val name = callSite.getOrElse(rdd.origin)
 
   override def toString = "Stage " + id
 
diff --git a/core/src/main/scala/spark/scheduler/StageInfo.scala b/core/src/main/scala/spark/scheduler/StageInfo.scala
index 8d83ff10c4..c4026f995a 100644
--- a/core/src/main/scala/spark/scheduler/StageInfo.scala
+++ b/core/src/main/scala/spark/scheduler/StageInfo.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import spark.scheduler.cluster.TaskInfo
@@ -9,4 +26,4 @@ case class StageInfo(
     val taskInfos: mutable.Buffer[(TaskInfo, TaskMetrics)] = mutable.Buffer[(TaskInfo, TaskMetrics)]()
 ) {
   override def toString = stage.rdd.toString
-}
-\ No newline at end of file
+}
diff --git a/core/src/main/scala/spark/scheduler/Task.scala b/core/src/main/scala/spark/scheduler/Task.scala
index a6462c6968..50768d43e0 100644
--- a/core/src/main/scala/spark/scheduler/Task.scala
+++ b/core/src/main/scala/spark/scheduler/Task.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import spark.serializer.SerializerInstance
diff --git a/core/src/main/scala/spark/scheduler/TaskResult.scala b/core/src/main/scala/spark/scheduler/TaskResult.scala
index 6de0aa7adf..dc0621ea7b 100644
--- a/core/src/main/scala/spark/scheduler/TaskResult.scala
+++ b/core/src/main/scala/spark/scheduler/TaskResult.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import java.io._
diff --git a/core/src/main/scala/spark/scheduler/TaskScheduler.scala b/core/src/main/scala/spark/scheduler/TaskScheduler.scala
index 7787b54762..5188308006 100644
--- a/core/src/main/scala/spark/scheduler/TaskScheduler.scala
+++ b/core/src/main/scala/spark/scheduler/TaskScheduler.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 /**
diff --git a/core/src/main/scala/spark/scheduler/TaskSchedulerListener.scala b/core/src/main/scala/spark/scheduler/TaskSchedulerListener.scala
index b75d3736cf..245e7ccb52 100644
--- a/core/src/main/scala/spark/scheduler/TaskSchedulerListener.scala
+++ b/core/src/main/scala/spark/scheduler/TaskSchedulerListener.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import spark.scheduler.cluster.TaskInfo
diff --git a/core/src/main/scala/spark/scheduler/TaskSet.scala b/core/src/main/scala/spark/scheduler/TaskSet.scala
index e4b5fcaedb..dc3550dd0b 100644
--- a/core/src/main/scala/spark/scheduler/TaskSet.scala
+++ b/core/src/main/scala/spark/scheduler/TaskSet.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler
 
 import java.util.Properties
diff --git a/core/src/main/scala/spark/scheduler/cluster/ClusterScheduler.scala b/core/src/main/scala/spark/scheduler/cluster/ClusterScheduler.scala
index 3a0c29b27f..7c10074dc7 100644
--- a/core/src/main/scala/spark/scheduler/cluster/ClusterScheduler.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/ClusterScheduler.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import java.lang.{Boolean => JBoolean}
diff --git a/core/src/main/scala/spark/scheduler/cluster/ClusterTaskSetManager.scala b/core/src/main/scala/spark/scheduler/cluster/ClusterTaskSetManager.scala
index d72b0bfc9f..3d06520675 100644
--- a/core/src/main/scala/spark/scheduler/cluster/ClusterTaskSetManager.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/ClusterTaskSetManager.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import java.util.{HashMap => JHashMap, NoSuchElementException, Arrays}
@@ -454,10 +471,10 @@ private[spark] class ClusterTaskSetManager(
           val taskId = sched.newTaskId()
           // Figure out whether this should count as a preferred launch
           val taskLocality =
-            if (isProcessLocalLocation(task, hostPort)) TaskLocality.PROCESS_LOCAL else
-            if (isHostLocalLocation(task, hostPort)) TaskLocality.NODE_LOCAL else
-            if (isRackLocalLocation(task, hostPort)) TaskLocality.RACK_LOCAL else
-              TaskLocality.ANY
+            if (isProcessLocalLocation(task, hostPort)) TaskLocality.PROCESS_LOCAL
+            else if (isHostLocalLocation(task, hostPort)) TaskLocality.NODE_LOCAL
+            else if (isRackLocalLocation(task, hostPort)) TaskLocality.RACK_LOCAL
+            else  TaskLocality.ANY
           val prefStr = taskLocality.toString
           logInfo("Starting task %s:%d as TID %s on slave %s: %s (%s)".format(
             taskSet.id, index, taskId, execId, hostPort, prefStr))
@@ -467,7 +484,7 @@ private[spark] class ClusterTaskSetManager(
           val info = new TaskInfo(taskId, index, time, execId, hostPort, taskLocality)
           taskInfos(taskId) = info
           taskAttempts(index) = info :: taskAttempts(index)
-          if (TaskLocality.NODE_LOCAL == taskLocality) {
+          if (taskLocality == TaskLocality.PROCESS_LOCAL || taskLocality == TaskLocality.NODE_LOCAL) {
             lastPreferredLaunchTime = time
           }
           // Serialize and return the task
@@ -571,6 +588,7 @@ private[spark] class ClusterTaskSetManager(
             return
 
           case ef: ExceptionFailure =>
+            sched.listener.taskEnded(tasks(index), ef, null, null, info, ef.metrics.getOrElse(null))
             val key = ef.description
             val now = System.currentTimeMillis
             val (printFull, dupCount) = {
diff --git a/core/src/main/scala/spark/scheduler/cluster/ExecutorLossReason.scala b/core/src/main/scala/spark/scheduler/cluster/ExecutorLossReason.scala
index 8bf838209f..8825f2dd24 100644
--- a/core/src/main/scala/spark/scheduler/cluster/ExecutorLossReason.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/ExecutorLossReason.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import spark.executor.ExecutorExitCode
diff --git a/core/src/main/scala/spark/scheduler/cluster/Pool.scala b/core/src/main/scala/spark/scheduler/cluster/Pool.scala
index 941ba7a3f1..83708f07e1 100644
--- a/core/src/main/scala/spark/scheduler/cluster/Pool.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/Pool.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import scala.collection.mutable.ArrayBuffer
diff --git a/core/src/main/scala/spark/scheduler/cluster/Schedulable.scala b/core/src/main/scala/spark/scheduler/cluster/Schedulable.scala
index 2dd9c0564f..f557b142c4 100644
--- a/core/src/main/scala/spark/scheduler/cluster/Schedulable.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/Schedulable.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import scala.collection.mutable.ArrayBuffer
diff --git a/core/src/main/scala/spark/scheduler/cluster/SchedulableBuilder.scala b/core/src/main/scala/spark/scheduler/cluster/SchedulableBuilder.scala
index 18cc15c2a5..95554023c0 100644
--- a/core/src/main/scala/spark/scheduler/cluster/SchedulableBuilder.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/SchedulableBuilder.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import java.io.{File, FileInputStream, FileOutputStream}
diff --git a/core/src/main/scala/spark/scheduler/cluster/SchedulerBackend.scala b/core/src/main/scala/spark/scheduler/cluster/SchedulerBackend.scala
index 9ac875de3a..4431744ec3 100644
--- a/core/src/main/scala/spark/scheduler/cluster/SchedulerBackend.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/SchedulerBackend.scala
@@ -1,6 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
-import spark.Utils
+import spark.{SparkContext, Utils}
 
 /**
  * A backend interface for cluster scheduling systems that allows plugging in different ones under
@@ -14,14 +31,7 @@ private[spark] trait SchedulerBackend {
   def defaultParallelism(): Int
 
   // Memory used by each executor (in megabytes)
-  protected val executorMemory = {
-    // TODO: Might need to add some extra memory for the non-heap parts of the JVM
-    Option(System.getProperty("spark.executor.memory"))
-      .orElse(Option(System.getenv("SPARK_MEM")))
-      .map(Utils.memoryStringToMb)
-      .getOrElse(512)
-  }
-
+  protected val executorMemory: Int = SparkContext.executorMemoryRequested
 
   // TODO: Probably want to add a killTask too
 }
diff --git a/core/src/main/scala/spark/scheduler/cluster/SchedulingAlgorithm.scala b/core/src/main/scala/spark/scheduler/cluster/SchedulingAlgorithm.scala
index f33310a34a..69e0ac2a6b 100644
--- a/core/src/main/scala/spark/scheduler/cluster/SchedulingAlgorithm.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/SchedulingAlgorithm.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 /**
diff --git a/core/src/main/scala/spark/scheduler/cluster/SchedulingMode.scala b/core/src/main/scala/spark/scheduler/cluster/SchedulingMode.scala
index 6e0c6793e0..4b3e3e50e1 100644
--- a/core/src/main/scala/spark/scheduler/cluster/SchedulingMode.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/SchedulingMode.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 object SchedulingMode extends Enumeration("FAIR","FIFO"){
diff --git a/core/src/main/scala/spark/scheduler/cluster/SparkDeploySchedulerBackend.scala b/core/src/main/scala/spark/scheduler/cluster/SparkDeploySchedulerBackend.scala
index 170ede0f44..55d6c0a47e 100644
--- a/core/src/main/scala/spark/scheduler/cluster/SparkDeploySchedulerBackend.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/SparkDeploySchedulerBackend.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import spark.{Utils, Logging, SparkContext}
diff --git a/core/src/main/scala/spark/scheduler/cluster/StandaloneClusterMessage.scala b/core/src/main/scala/spark/scheduler/cluster/StandaloneClusterMessage.scala
index 3335294844..ac9e5ef94d 100644
--- a/core/src/main/scala/spark/scheduler/cluster/StandaloneClusterMessage.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/StandaloneClusterMessage.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import spark.TaskState.TaskState
diff --git a/core/src/main/scala/spark/scheduler/cluster/StandaloneSchedulerBackend.scala b/core/src/main/scala/spark/scheduler/cluster/StandaloneSchedulerBackend.scala
index 004592a540..03a64e0192 100644
--- a/core/src/main/scala/spark/scheduler/cluster/StandaloneSchedulerBackend.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/StandaloneSchedulerBackend.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import scala.collection.mutable.{ArrayBuffer, HashMap, HashSet}
diff --git a/core/src/main/scala/spark/scheduler/cluster/TaskDescription.scala b/core/src/main/scala/spark/scheduler/cluster/TaskDescription.scala
index b41e951be9..761fdf6919 100644
--- a/core/src/main/scala/spark/scheduler/cluster/TaskDescription.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/TaskDescription.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/scheduler/cluster/TaskInfo.scala b/core/src/main/scala/spark/scheduler/cluster/TaskInfo.scala
index 718f26bfbd..a1ebd48b01 100644
--- a/core/src/main/scala/spark/scheduler/cluster/TaskInfo.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/TaskInfo.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import spark.Utils
diff --git a/core/src/main/scala/spark/scheduler/cluster/TaskSetManager.scala b/core/src/main/scala/spark/scheduler/cluster/TaskSetManager.scala
index b4dd75d90f..07c3ddcc7e 100644
--- a/core/src/main/scala/spark/scheduler/cluster/TaskSetManager.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/TaskSetManager.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 import scala.collection.mutable.ArrayBuffer
diff --git a/core/src/main/scala/spark/scheduler/cluster/WorkerOffer.scala b/core/src/main/scala/spark/scheduler/cluster/WorkerOffer.scala
index c47824315c..06d1203f70 100644
--- a/core/src/main/scala/spark/scheduler/cluster/WorkerOffer.scala
+++ b/core/src/main/scala/spark/scheduler/cluster/WorkerOffer.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.cluster
 
 /**
diff --git a/core/src/main/scala/spark/scheduler/local/LocalScheduler.scala b/core/src/main/scala/spark/scheduler/local/LocalScheduler.scala
index 93d4318b29..1f73cb99a7 100644
--- a/core/src/main/scala/spark/scheduler/local/LocalScheduler.scala
+++ b/core/src/main/scala/spark/scheduler/local/LocalScheduler.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.local
 
 import java.io.File
@@ -145,6 +162,9 @@ private[spark] class LocalScheduler(threads: Int, val maxFailures: Int, val sc:
     // Set the Spark execution environment for the worker thread
     SparkEnv.set(env)
     val ser = SparkEnv.get.closureSerializer.newInstance()
+    var attemptedTask: Option[Task[_]] = None
+    val start = System.currentTimeMillis()
+    var taskStart: Long = 0
     try {
       Accumulators.clear()
       Thread.currentThread().setContextClassLoader(classLoader)
@@ -153,10 +173,11 @@ private[spark] class LocalScheduler(threads: Int, val maxFailures: Int, val sc:
       // this adds a bit of unnecessary overhead but matches how the Mesos Executor works.
       val (taskFiles, taskJars, taskBytes) = Task.deserializeWithDependencies(bytes)
       updateDependencies(taskFiles, taskJars)   // Download any files added with addFile
-      val deserStart = System.currentTimeMillis()
       val deserializedTask = ser.deserialize[Task[_]](
         taskBytes, Thread.currentThread.getContextClassLoader)
-      val deserTime = System.currentTimeMillis() - deserStart
+      attemptedTask = Some(deserializedTask)
+      val deserTime = System.currentTimeMillis() - start
+      taskStart = System.currentTimeMillis()
 
       // Run it
       val result: Any = deserializedTask.run(taskId)
@@ -170,16 +191,19 @@ private[spark] class LocalScheduler(threads: Int, val maxFailures: Int, val sc:
       val resultToReturn = ser.deserialize[Any](serResult)
       val accumUpdates = ser.deserialize[collection.mutable.Map[Long, Any]](
         ser.serialize(Accumulators.values))
+      val serviceTime = System.currentTimeMillis() - taskStart
       logInfo("Finished " + taskId)
-      deserializedTask.metrics.get.executorRunTime = deserTime.toInt//info.duration.toInt  //close enough
+      deserializedTask.metrics.get.executorRunTime = serviceTime.toInt
       deserializedTask.metrics.get.executorDeserializeTime = deserTime.toInt
-
       val taskResult = new TaskResult(result, accumUpdates, deserializedTask.metrics.getOrElse(null))
       val serializedResult = ser.serialize(taskResult)
       localActor ! LocalStatusUpdate(taskId, TaskState.FINISHED, serializedResult)
     } catch {
       case t: Throwable => {
-        val failure = new ExceptionFailure(t.getClass.getName, t.toString, t.getStackTrace)
+        val serviceTime = System.currentTimeMillis() - taskStart
+        val metrics = attemptedTask.flatMap(t => t.metrics)
+        metrics.foreach{m => m.executorRunTime = serviceTime.toInt}
+        val failure = new ExceptionFailure(t.getClass.getName, t.toString, t.getStackTrace, metrics)
         localActor ! LocalStatusUpdate(taskId, TaskState.FAILED, ser.serialize(failure))
       }
     }
diff --git a/core/src/main/scala/spark/scheduler/local/LocalTaskSetManager.scala b/core/src/main/scala/spark/scheduler/local/LocalTaskSetManager.scala
index 70b69bb26f..e662ad6709 100644
--- a/core/src/main/scala/spark/scheduler/local/LocalTaskSetManager.scala
+++ b/core/src/main/scala/spark/scheduler/local/LocalTaskSetManager.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.local
 
 import java.io.File
@@ -152,6 +169,7 @@ private[spark] class LocalTaskSetManager(sched: LocalScheduler, val taskSet: Tas
     info.markFailed()
     decreaseRunningTasks(1)
     val reason: ExceptionFailure = ser.deserialize[ExceptionFailure](serializedData, getClass.getClassLoader)
+    sched.listener.taskEnded(task, reason, null, null, info, reason.metrics.getOrElse(null))
     if (!finished(index)) {
       copiesRunning(index) -= 1
       numFailures(index) += 1
diff --git a/core/src/main/scala/spark/scheduler/mesos/CoarseMesosSchedulerBackend.scala b/core/src/main/scala/spark/scheduler/mesos/CoarseMesosSchedulerBackend.scala
index f4a2994b6d..7bc6040544 100644
--- a/core/src/main/scala/spark/scheduler/mesos/CoarseMesosSchedulerBackend.scala
+++ b/core/src/main/scala/spark/scheduler/mesos/CoarseMesosSchedulerBackend.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.mesos
 
 import com.google.protobuf.ByteString
diff --git a/core/src/main/scala/spark/scheduler/mesos/MesosSchedulerBackend.scala b/core/src/main/scala/spark/scheduler/mesos/MesosSchedulerBackend.scala
index ca7fab4cc5..75b8268b55 100644
--- a/core/src/main/scala/spark/scheduler/mesos/MesosSchedulerBackend.scala
+++ b/core/src/main/scala/spark/scheduler/mesos/MesosSchedulerBackend.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.scheduler.mesos
 
 import com.google.protobuf.ByteString
@@ -43,8 +60,12 @@ private[spark] class MesosSchedulerBackend(
   // An ExecutorInfo for our tasks
   var execArgs: Array[Byte] = null
 
+  var classLoader: ClassLoader = null
+
   override def start() {
     synchronized {
+      classLoader = Thread.currentThread.getContextClassLoader
+
       new Thread("MesosSchedulerBackend driver") {
         setDaemon(true)
         override def run() {
@@ -114,13 +135,28 @@ private[spark] class MesosSchedulerBackend(
     return execArgs
   }
 
+  private def setClassLoader(): ClassLoader = {
+    val oldClassLoader = Thread.currentThread.getContextClassLoader
+    Thread.currentThread.setContextClassLoader(classLoader)
+    return oldClassLoader
+  }
+
+  private def restoreClassLoader(oldClassLoader: ClassLoader) {
+    Thread.currentThread.setContextClassLoader(oldClassLoader)
+  }
+
   override def offerRescinded(d: SchedulerDriver, o: OfferID) {}
 
   override def registered(d: SchedulerDriver, frameworkId: FrameworkID, masterInfo: MasterInfo) {
-    logInfo("Registered as framework ID " + frameworkId.getValue)
-    registeredLock.synchronized {
-      isRegistered = true
-      registeredLock.notifyAll()
+    val oldClassLoader = setClassLoader()
+    try {
+      logInfo("Registered as framework ID " + frameworkId.getValue)
+      registeredLock.synchronized {
+        isRegistered = true
+        registeredLock.notifyAll()
+      }
+    } finally {
+      restoreClassLoader(oldClassLoader)
     }
   }
 
@@ -142,49 +178,54 @@ private[spark] class MesosSchedulerBackend(
    * tasks are balanced across the cluster.
    */
   override def resourceOffers(d: SchedulerDriver, offers: JList[Offer]) {
-    synchronized {
-      // Build a big list of the offerable workers, and remember their indices so that we can
-      // figure out which Offer to reply to for each worker
-      val offerableIndices = new ArrayBuffer[Int]
-      val offerableWorkers = new ArrayBuffer[WorkerOffer]
-
-      def enoughMemory(o: Offer) = {
-        val mem = getResource(o.getResourcesList, "mem")
-        val slaveId = o.getSlaveId.getValue
-        mem >= executorMemory || slaveIdsWithExecutors.contains(slaveId)
-      }
+    val oldClassLoader = setClassLoader()
+    try {
+      synchronized {
+        // Build a big list of the offerable workers, and remember their indices so that we can
+        // figure out which Offer to reply to for each worker
+        val offerableIndices = new ArrayBuffer[Int]
+        val offerableWorkers = new ArrayBuffer[WorkerOffer]
+
+        def enoughMemory(o: Offer) = {
+          val mem = getResource(o.getResourcesList, "mem")
+          val slaveId = o.getSlaveId.getValue
+          mem >= executorMemory || slaveIdsWithExecutors.contains(slaveId)
+        }
 
-      for ((offer, index) <- offers.zipWithIndex if enoughMemory(offer)) {
-        offerableIndices += index
-        offerableWorkers += new WorkerOffer(
-          offer.getSlaveId.getValue,
-          offer.getHostname,
-          getResource(offer.getResourcesList, "cpus").toInt)
-      }
+        for ((offer, index) <- offers.zipWithIndex if enoughMemory(offer)) {
+          offerableIndices += index
+          offerableWorkers += new WorkerOffer(
+            offer.getSlaveId.getValue,
+            offer.getHostname,
+            getResource(offer.getResourcesList, "cpus").toInt)
+        }
 
-      // Call into the ClusterScheduler
-      val taskLists = scheduler.resourceOffers(offerableWorkers)
-
-      // Build a list of Mesos tasks for each slave
-      val mesosTasks = offers.map(o => Collections.emptyList[MesosTaskInfo]())
-      for ((taskList, index) <- taskLists.zipWithIndex) {
-        if (!taskList.isEmpty) {
-          val offerNum = offerableIndices(index)
-          val slaveId = offers(offerNum).getSlaveId.getValue
-          slaveIdsWithExecutors += slaveId
-          mesosTasks(offerNum) = new JArrayList[MesosTaskInfo](taskList.size)
-          for (taskDesc <- taskList) {
-            taskIdToSlaveId(taskDesc.taskId) = slaveId
-            mesosTasks(offerNum).add(createMesosTask(taskDesc, slaveId))
+        // Call into the ClusterScheduler
+        val taskLists = scheduler.resourceOffers(offerableWorkers)
+
+        // Build a list of Mesos tasks for each slave
+        val mesosTasks = offers.map(o => Collections.emptyList[MesosTaskInfo]())
+        for ((taskList, index) <- taskLists.zipWithIndex) {
+          if (!taskList.isEmpty) {
+            val offerNum = offerableIndices(index)
+            val slaveId = offers(offerNum).getSlaveId.getValue
+            slaveIdsWithExecutors += slaveId
+            mesosTasks(offerNum) = new JArrayList[MesosTaskInfo](taskList.size)
+            for (taskDesc <- taskList) {
+              taskIdToSlaveId(taskDesc.taskId) = slaveId
+              mesosTasks(offerNum).add(createMesosTask(taskDesc, slaveId))
+            }
           }
         }
-      }
 
-      // Reply to the offers
-      val filters = Filters.newBuilder().setRefuseSeconds(1).build() // TODO: lower timeout?
-      for (i <- 0 until offers.size) {
-        d.launchTasks(offers(i).getId, mesosTasks(i), filters)
+        // Reply to the offers
+        val filters = Filters.newBuilder().setRefuseSeconds(1).build() // TODO: lower timeout?
+        for (i <- 0 until offers.size) {
+          d.launchTasks(offers(i).getId, mesosTasks(i), filters)
+        }
       }
+    } finally {
+      restoreClassLoader(oldClassLoader)
     }
   }
 
@@ -224,23 +265,33 @@ private[spark] class MesosSchedulerBackend(
   }
 
   override def statusUpdate(d: SchedulerDriver, status: TaskStatus) {
-    val tid = status.getTaskId.getValue.toLong
-    val state = TaskState.fromMesos(status.getState)
-    synchronized {
-      if (status.getState == MesosTaskState.TASK_LOST && taskIdToSlaveId.contains(tid)) {
-        // We lost the executor on this slave, so remember that it's gone
-        slaveIdsWithExecutors -= taskIdToSlaveId(tid)
-      }
-      if (isFinished(status.getState)) {
-        taskIdToSlaveId.remove(tid)
+    val oldClassLoader = setClassLoader()
+    try {
+      val tid = status.getTaskId.getValue.toLong
+      val state = TaskState.fromMesos(status.getState)
+      synchronized {
+        if (status.getState == MesosTaskState.TASK_LOST && taskIdToSlaveId.contains(tid)) {
+          // We lost the executor on this slave, so remember that it's gone
+          slaveIdsWithExecutors -= taskIdToSlaveId(tid)
+        }
+        if (isFinished(status.getState)) {
+          taskIdToSlaveId.remove(tid)
+        }
       }
+      scheduler.statusUpdate(tid, state, status.getData.asReadOnlyByteBuffer)
+    } finally {
+      restoreClassLoader(oldClassLoader)
     }
-    scheduler.statusUpdate(tid, state, status.getData.asReadOnlyByteBuffer)
   }
 
   override def error(d: SchedulerDriver, message: String) {
-    logError("Mesos error: " + message)
-    scheduler.error(message)
+    val oldClassLoader = setClassLoader()
+    try {
+      logError("Mesos error: " + message)
+      scheduler.error(message)
+    } finally {
+      restoreClassLoader(oldClassLoader)
+    }
   }
 
   override def stop() {
@@ -256,11 +307,16 @@ private[spark] class MesosSchedulerBackend(
   override def frameworkMessage(d: SchedulerDriver, e: ExecutorID, s: SlaveID, b: Array[Byte]) {}
 
   private def recordSlaveLost(d: SchedulerDriver, slaveId: SlaveID, reason: ExecutorLossReason) {
-    logInfo("Mesos slave lost: " + slaveId.getValue)
-    synchronized {
-      slaveIdsWithExecutors -= slaveId.getValue
+    val oldClassLoader = setClassLoader()
+    try {
+      logInfo("Mesos slave lost: " + slaveId.getValue)
+      synchronized {
+        slaveIdsWithExecutors -= slaveId.getValue
+      }
+      scheduler.executorLost(slaveId.getValue, reason)
+    } finally {
+      restoreClassLoader(oldClassLoader)
     }
-    scheduler.executorLost(slaveId.getValue, reason)
   }
 
   override def slaveLost(d: SchedulerDriver, slaveId: SlaveID) {
diff --git a/core/src/main/scala/spark/serializer/Serializer.scala b/core/src/main/scala/spark/serializer/Serializer.scala
index 2ad73b711d..dc94d42bb6 100644
--- a/core/src/main/scala/spark/serializer/Serializer.scala
+++ b/core/src/main/scala/spark/serializer/Serializer.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.serializer
 
 import java.io.{EOFException, InputStream, OutputStream}
diff --git a/core/src/main/scala/spark/serializer/SerializerManager.scala b/core/src/main/scala/spark/serializer/SerializerManager.scala
index 60b2aac797..b7b24705a2 100644
--- a/core/src/main/scala/spark/serializer/SerializerManager.scala
+++ b/core/src/main/scala/spark/serializer/SerializerManager.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.serializer
 
 import java.util.concurrent.ConcurrentHashMap
diff --git a/core/src/main/scala/spark/storage/BlockException.scala b/core/src/main/scala/spark/storage/BlockException.scala
index f275d476df..8ebfaf3cbf 100644
--- a/core/src/main/scala/spark/storage/BlockException.scala
+++ b/core/src/main/scala/spark/storage/BlockException.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 private[spark]
diff --git a/core/src/main/scala/spark/storage/BlockFetchTracker.scala b/core/src/main/scala/spark/storage/BlockFetchTracker.scala
index 0718156b1b..265e554ad8 100644
--- a/core/src/main/scala/spark/storage/BlockFetchTracker.scala
+++ b/core/src/main/scala/spark/storage/BlockFetchTracker.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 private[spark] trait BlockFetchTracker {
diff --git a/core/src/main/scala/spark/storage/BlockFetcherIterator.scala b/core/src/main/scala/spark/storage/BlockFetcherIterator.scala
index 1d69d658f7..1965c5bc19 100644
--- a/core/src/main/scala/spark/storage/BlockFetcherIterator.scala
+++ b/core/src/main/scala/spark/storage/BlockFetcherIterator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.nio.ByteBuffer
@@ -67,11 +84,20 @@ object BlockFetcherIterator {
       throw new IllegalArgumentException("BlocksByAddress is null")
     }
 
-    protected var _totalBlocks = blocksByAddress.map(_._2.size).sum
-    logDebug("Getting " + _totalBlocks + " blocks")
+    // Total number blocks fetched (local + remote). Also number of FetchResults expected
+    protected var _numBlocksToFetch = 0
+
     protected var startTime = System.currentTimeMillis
-    protected val localBlockIds = new ArrayBuffer[String]()
-    protected val remoteBlockIds = new HashSet[String]()
+
+    // This represents the number of local blocks, also counting zero-sized blocks
+    private var numLocal = 0
+    // BlockIds for local blocks that need to be fetched. Excludes zero-sized blocks
+    protected val localBlocksToFetch = new ArrayBuffer[String]()
+
+    // This represents the number of remote blocks, also counting zero-sized blocks
+    private var numRemote = 0
+    // BlockIds for remote blocks that need to be fetched. Excludes zero-sized blocks
+    protected val remoteBlocksToFetch = new HashSet[String]()
 
     // A queue to hold our results.
     protected val results = new LinkedBlockingQueue[FetchResult]
@@ -124,13 +150,15 @@ object BlockFetcherIterator {
     protected def splitLocalRemoteBlocks(): ArrayBuffer[FetchRequest] = {
       // Split local and remote blocks. Remote blocks are further split into FetchRequests of size
       // at most maxBytesInFlight in order to limit the amount of data in flight.
-      val originalTotalBlocks = _totalBlocks
       val remoteRequests = new ArrayBuffer[FetchRequest]
       for ((address, blockInfos) <- blocksByAddress) {
         if (address == blockManagerId) {
-          localBlockIds ++= blockInfos.map(_._1)
+          numLocal = blockInfos.size
+          // Filter out zero-sized blocks
+          localBlocksToFetch ++= blockInfos.filter(_._2 != 0).map(_._1)
+          _numBlocksToFetch += localBlocksToFetch.size
         } else {
-          remoteBlockIds ++= blockInfos.map(_._1)
+          numRemote += blockInfos.size
           // Make our requests at least maxBytesInFlight / 5 in length; the reason to keep them
           // smaller than maxBytesInFlight is to allow multiple, parallel fetches from up to 5
           // nodes, rather than blocking on reading output from one node.
@@ -144,10 +172,10 @@ object BlockFetcherIterator {
             // Skip empty blocks
             if (size > 0) {
               curBlocks += ((blockId, size))
+              remoteBlocksToFetch += blockId
+              _numBlocksToFetch += 1
               curRequestSize += size
-            } else if (size == 0) {
-              _totalBlocks -= 1
-            } else {
+            } else if (size < 0) {
               throw new BlockException(blockId, "Negative block size " + size)
             }
             if (curRequestSize >= minRequestSize) {
@@ -163,8 +191,8 @@ object BlockFetcherIterator {
           }
         }
       }
-      logInfo("Getting " + _totalBlocks + " non-zero-bytes blocks out of " +
-        originalTotalBlocks + " blocks")
+      logInfo("Getting " + _numBlocksToFetch + " non-zero-bytes blocks out of " +
+        totalBlocks + " blocks")
       remoteRequests
     }
 
@@ -172,7 +200,7 @@ object BlockFetcherIterator {
       // Get the local blocks while remote blocks are being fetched. Note that it's okay to do
       // these all at once because they will just memory-map some files, so they won't consume
       // any memory that might exceed our maxBytesInFlight
-      for (id <- localBlockIds) {
+      for (id <- localBlocksToFetch) {
         getLocalFromDisk(id, serializer) match {
           case Some(iter) => {
             // Pass 0 as size since it's not in flight
@@ -198,7 +226,7 @@ object BlockFetcherIterator {
         sendRequest(fetchRequests.dequeue())
       }
 
-      val numGets = remoteBlockIds.size - fetchRequests.size
+      val numGets = remoteRequests.size - fetchRequests.size
       logInfo("Started " + numGets + " remote gets in " + Utils.getUsedTimeMs(startTime))
 
       // Get Local Blocks
@@ -210,7 +238,7 @@ object BlockFetcherIterator {
     //an iterator that will read fetched blocks off the queue as they arrive.
     @volatile protected var resultsGotten = 0
 
-    override def hasNext: Boolean = resultsGotten < _totalBlocks
+    override def hasNext: Boolean = resultsGotten < _numBlocksToFetch
 
     override def next(): (String, Option[Iterator[Any]]) = {
       resultsGotten += 1
@@ -227,9 +255,9 @@ object BlockFetcherIterator {
     }
 
     // Implementing BlockFetchTracker trait.
-    override def totalBlocks: Int = _totalBlocks
-    override def numLocalBlocks: Int = localBlockIds.size
-    override def numRemoteBlocks: Int = remoteBlockIds.size
+    override def totalBlocks: Int = numLocal + numRemote
+    override def numLocalBlocks: Int = numLocal
+    override def numRemoteBlocks: Int = numRemote
     override def remoteFetchTime: Long = _remoteFetchTime
     override def fetchWaitTime: Long = _fetchWaitTime
     override def remoteBytesRead: Long = _remoteBytesRead
@@ -265,7 +293,7 @@ object BlockFetcherIterator {
       }).toList
     }
 
-    //keep this to interrupt the threads when necessary
+    // keep this to interrupt the threads when necessary
     private def stopCopiers() {
       for (copier <- copiers) {
         copier.interrupt()
@@ -291,7 +319,7 @@ object BlockFetcherIterator {
     private var copiers: List[_ <: Thread] = null
 
     override def initialize() {
-      // Split Local Remote Blocks and adjust totalBlocks to include only the non 0-byte blocks
+      // Split Local Remote Blocks and set numBlocksToFetch
       val remoteRequests = splitLocalRemoteBlocks()
       // Add the remote requests into our queue in a random order
       for (request <- Utils.randomize(remoteRequests)) {
@@ -311,10 +339,7 @@ object BlockFetcherIterator {
     override def next(): (String, Option[Iterator[Any]]) = {
       resultsGotten += 1
       val result = results.take()
-      // if all the results has been retrieved, shutdown the copiers
-      if (resultsGotten == _totalBlocks && copiers != null) {
-        stopCopiers()
-      }
+      // If all the results has been retrieved, copiers will exit automatically
       (result.blockId, if (result.failed) None else Some(result.deserialize()))
     }
   }
diff --git a/core/src/main/scala/spark/storage/BlockManager.scala b/core/src/main/scala/spark/storage/BlockManager.scala
index 9b39d3aadf..e4ffa57ad2 100644
--- a/core/src/main/scala/spark/storage/BlockManager.scala
+++ b/core/src/main/scala/spark/storage/BlockManager.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.io.{InputStream, OutputStream}
diff --git a/core/src/main/scala/spark/storage/BlockManagerId.scala b/core/src/main/scala/spark/storage/BlockManagerId.scala
index 1e557d6148..b36a6176c0 100644
--- a/core/src/main/scala/spark/storage/BlockManagerId.scala
+++ b/core/src/main/scala/spark/storage/BlockManagerId.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.io.{Externalizable, IOException, ObjectInput, ObjectOutput}
diff --git a/core/src/main/scala/spark/storage/BlockManagerMaster.scala b/core/src/main/scala/spark/storage/BlockManagerMaster.scala
index 58888b1ebb..3186f7c85b 100644
--- a/core/src/main/scala/spark/storage/BlockManagerMaster.scala
+++ b/core/src/main/scala/spark/storage/BlockManagerMaster.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import akka.actor.ActorRef
diff --git a/core/src/main/scala/spark/storage/BlockManagerMasterActor.scala b/core/src/main/scala/spark/storage/BlockManagerMasterActor.scala
index 0d4384ba1f..244000d952 100644
--- a/core/src/main/scala/spark/storage/BlockManagerMasterActor.scala
+++ b/core/src/main/scala/spark/storage/BlockManagerMasterActor.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.util.{HashMap => JHashMap}
diff --git a/core/src/main/scala/spark/storage/BlockManagerMessages.scala b/core/src/main/scala/spark/storage/BlockManagerMessages.scala
index 0010726c8d..01de4ccb8f 100644
--- a/core/src/main/scala/spark/storage/BlockManagerMessages.scala
+++ b/core/src/main/scala/spark/storage/BlockManagerMessages.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.io.{Externalizable, ObjectInput, ObjectOutput}
diff --git a/core/src/main/scala/spark/storage/BlockManagerSlaveActor.scala b/core/src/main/scala/spark/storage/BlockManagerSlaveActor.scala
index b264d1deb5..45cffad810 100644
--- a/core/src/main/scala/spark/storage/BlockManagerSlaveActor.scala
+++ b/core/src/main/scala/spark/storage/BlockManagerSlaveActor.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import akka.actor.Actor
diff --git a/core/src/main/scala/spark/storage/BlockManagerUI.scala b/core/src/main/scala/spark/storage/BlockManagerUI.scala
deleted file mode 100644
index e02281344a..0000000000
--- a/core/src/main/scala/spark/storage/BlockManagerUI.scala
+++ /dev/null
@@ -1,79 +0,0 @@
-package spark.storage
-
-import akka.actor.{ActorRef, ActorSystem}
-import akka.util.Duration
-import akka.util.duration._
-import cc.spray.typeconversion.TwirlSupport._
-import cc.spray.Directives
-import spark.{Logging, SparkContext}
-import spark.util.AkkaUtils
-import spark.Utils
-
-
-/**
- * Web UI server for the BlockManager inside each SparkContext.
- */
-private[spark]
-class BlockManagerUI(val actorSystem: ActorSystem, blockManagerMaster: ActorRef, sc: SparkContext)
-  extends Directives with Logging {
-
-  val STATIC_RESOURCE_DIR = "spark/deploy/static"
-
-  implicit val timeout = Duration.create(System.getProperty("spark.akka.askTimeout", "10").toLong, "seconds")
-  val host = Utils.localHostName()
-  val port = if (System.getProperty("spark.ui.port") != null) {
-    System.getProperty("spark.ui.port").toInt
-  } else {
-    // TODO: Unfortunately, it's not possible to pass port 0 to spray and figure out which
-    // random port it bound to, so we have to try to find a local one by creating a socket.
-    Utils.findFreePort()
-  }
-
-  /** Start a HTTP server to run the Web interface */
-  def start() {
-    try {
-      AkkaUtils.startSprayServer(actorSystem, "0.0.0.0", port, handler, "BlockManagerHTTPServer")
-      logInfo("Started BlockManager web UI at http://%s:%d".format(host, port))
-    } catch {
-      case e: Exception =>
-        logError("Failed to create BlockManager WebUI", e)
-        System.exit(1)
-    }
-  }
-
-  val handler = {
-    get {
-      path("") {
-        completeWith {
-          // Request the current storage status from the Master
-          val storageStatusList = sc.getExecutorStorageStatus
-          // Calculate macro-level statistics
-          val maxMem = storageStatusList.map(_.maxMem).reduce(_+_)
-          val remainingMem = storageStatusList.map(_.memRemaining).reduce(_+_)
-          val diskSpaceUsed = storageStatusList.flatMap(_.blocks.values.map(_.diskSize))
-            .reduceOption(_+_).getOrElse(0L)
-          val rdds = StorageUtils.rddInfoFromStorageStatus(storageStatusList, sc)
-          spark.storage.html.index.
-            render(maxMem, remainingMem, diskSpaceUsed, rdds, storageStatusList)
-        }
-      } ~
-      path("rdd") {
-        parameter("id") { id =>
-          completeWith {
-            val prefix = "rdd_" + id.toString
-            val storageStatusList = sc.getExecutorStorageStatus
-            val filteredStorageStatusList = StorageUtils.
-              filterStorageStatusByPrefix(storageStatusList, prefix)
-            val rddInfo = StorageUtils.rddInfoFromStorageStatus(filteredStorageStatusList, sc).head
-            spark.storage.html.rdd.render(rddInfo, filteredStorageStatusList)
-          }
-        }
-      } ~
-      pathPrefix("static") {
-        getFromResourceDirectory(STATIC_RESOURCE_DIR)
-      }
-    }
-  }
-
-  private[spark] def appUIAddress = "http://" + host + ":" + port
-}
diff --git a/core/src/main/scala/spark/storage/BlockManagerWorker.scala b/core/src/main/scala/spark/storage/BlockManagerWorker.scala
index 3057ade233..39064bce92 100644
--- a/core/src/main/scala/spark/storage/BlockManagerWorker.scala
+++ b/core/src/main/scala/spark/storage/BlockManagerWorker.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/storage/BlockMessage.scala b/core/src/main/scala/spark/storage/BlockMessage.scala
index 30d7500e01..ab72dbb62b 100644
--- a/core/src/main/scala/spark/storage/BlockMessage.scala
+++ b/core/src/main/scala/spark/storage/BlockMessage.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/storage/BlockMessageArray.scala b/core/src/main/scala/spark/storage/BlockMessageArray.scala
index ee0c5ff9a2..b0229d6124 100644
--- a/core/src/main/scala/spark/storage/BlockMessageArray.scala
+++ b/core/src/main/scala/spark/storage/BlockMessageArray.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/storage/BlockObjectWriter.scala b/core/src/main/scala/spark/storage/BlockObjectWriter.scala
index 42e2b07d5c..01ed6e8c1f 100644
--- a/core/src/main/scala/spark/storage/BlockObjectWriter.scala
+++ b/core/src/main/scala/spark/storage/BlockObjectWriter.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/storage/BlockStore.scala b/core/src/main/scala/spark/storage/BlockStore.scala
index 8188d3595e..c8db0022b0 100644
--- a/core/src/main/scala/spark/storage/BlockStore.scala
+++ b/core/src/main/scala/spark/storage/BlockStore.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/storage/DiskStore.scala b/core/src/main/scala/spark/storage/DiskStore.scala
index 9914beec99..3495d653bd 100644
--- a/core/src/main/scala/spark/storage/DiskStore.scala
+++ b/core/src/main/scala/spark/storage/DiskStore.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.io.{File, FileOutputStream, OutputStream, RandomAccessFile}
@@ -35,21 +52,25 @@ private class DiskStore(blockManager: BlockManager, rootDirs: String)
     private var bs: OutputStream = null
     private var objOut: SerializationStream = null
     private var lastValidPosition = 0L
+    private var initialized = false
 
     override def open(): DiskBlockObjectWriter = {
       val fos = new FileOutputStream(f, true)
       channel = fos.getChannel()
-      bs = blockManager.wrapForCompression(blockId, new FastBufferedOutputStream(fos))
+      bs = blockManager.wrapForCompression(blockId, new FastBufferedOutputStream(fos, bufferSize))
       objOut = serializer.newInstance().serializeStream(bs)
+      initialized = true
       this
     }
 
     override def close() {
-      objOut.close()
-      bs.close()
-      channel = null
-      bs = null
-      objOut = null
+      if (initialized) {
+        objOut.close()
+        bs.close()
+        channel = null
+        bs = null
+        objOut = null
+      }
       // Invoke the close callback handler.
       super.close()
     }
@@ -59,23 +80,33 @@ private class DiskStore(blockManager: BlockManager, rootDirs: String)
     // Flush the partial writes, and set valid length to be the length of the entire file.
     // Return the number of bytes written for this commit.
     override def commit(): Long = {
-      // NOTE: Flush the serializer first and then the compressed/buffered output stream
-      objOut.flush()
-      bs.flush()
-      val prevPos = lastValidPosition
-      lastValidPosition = channel.position()
-      lastValidPosition - prevPos
+      if (initialized) {
+        // NOTE: Flush the serializer first and then the compressed/buffered output stream
+        objOut.flush()
+        bs.flush()
+        val prevPos = lastValidPosition
+        lastValidPosition = channel.position()
+        lastValidPosition - prevPos
+      } else {
+        // lastValidPosition is zero if stream is uninitialized
+        lastValidPosition
+      }
     }
 
     override def revertPartialWrites() {
-      // Discard current writes. We do this by flushing the outstanding writes and
-      // truncate the file to the last valid position.
-      objOut.flush()
-      bs.flush()
-      channel.truncate(lastValidPosition)
+      if (initialized) { 
+        // Discard current writes. We do this by flushing the outstanding writes and
+        // truncate the file to the last valid position.
+        objOut.flush()
+        bs.flush()
+        channel.truncate(lastValidPosition)
+      }
     }
 
     override def write(value: Any) {
+      if (!initialized) {
+        open()
+      }
       objOut.writeObject(value)
     }
 
@@ -196,7 +227,10 @@ private class DiskStore(blockManager: BlockManager, rootDirs: String)
   private def createFile(blockId: String, allowAppendExisting: Boolean = false): File = {
     val file = getFile(blockId)
     if (!allowAppendExisting && file.exists()) {
-      throw new Exception("File for block " + blockId + " already exists on disk: " + file)
+      // NOTE(shivaram): Delete the file if it exists. This might happen if a ShuffleMap task
+      // was rescheduled on the same machine as the old task.
+      logWarning("File for block " + blockId + " already exists on disk: " + file + ". Deleting")
+      file.delete()
     }
     file
   }
diff --git a/core/src/main/scala/spark/storage/MemoryStore.scala b/core/src/main/scala/spark/storage/MemoryStore.scala
index eba5ee507f..b5a86b85a7 100644
--- a/core/src/main/scala/spark/storage/MemoryStore.scala
+++ b/core/src/main/scala/spark/storage/MemoryStore.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.util.LinkedHashMap
diff --git a/core/src/main/scala/spark/storage/PutResult.scala b/core/src/main/scala/spark/storage/PutResult.scala
index 76f236057b..3a0974fe15 100644
--- a/core/src/main/scala/spark/storage/PutResult.scala
+++ b/core/src/main/scala/spark/storage/PutResult.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/storage/ShuffleBlockManager.scala b/core/src/main/scala/spark/storage/ShuffleBlockManager.scala
index 49eabfb0d2..8a7a6f9ed3 100644
--- a/core/src/main/scala/spark/storage/ShuffleBlockManager.scala
+++ b/core/src/main/scala/spark/storage/ShuffleBlockManager.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import spark.serializer.Serializer
@@ -24,7 +41,7 @@ class ShuffleBlockManager(blockManager: BlockManager) {
         val bufferSize = System.getProperty("spark.shuffle.file.buffer.kb", "100").toInt * 1024
         val writers = Array.tabulate[BlockObjectWriter](numBuckets) { bucketId =>
           val blockId = ShuffleBlockManager.blockId(shuffleId, bucketId, mapId)
-          blockManager.getDiskBlockWriter(blockId, serializer, bufferSize).open()
+          blockManager.getDiskBlockWriter(blockId, serializer, bufferSize)
         }
         new ShuffleWriterGroup(mapId, writers)
       }
diff --git a/core/src/main/scala/spark/storage/StorageLevel.scala b/core/src/main/scala/spark/storage/StorageLevel.scala
index cc0c354e7e..f52650988c 100644
--- a/core/src/main/scala/spark/storage/StorageLevel.scala
+++ b/core/src/main/scala/spark/storage/StorageLevel.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import java.io.{Externalizable, IOException, ObjectInput, ObjectOutput}
diff --git a/core/src/main/scala/spark/storage/StorageUtils.scala b/core/src/main/scala/spark/storage/StorageUtils.scala
index 950c0cdf35..2aeed4ea3c 100644
--- a/core/src/main/scala/spark/storage/StorageUtils.scala
+++ b/core/src/main/scala/spark/storage/StorageUtils.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import spark.{Utils, SparkContext}
@@ -39,12 +56,19 @@ case class RDDInfo(id: Int, name: String, storageLevel: StorageLevel,
 private[spark]
 object StorageUtils {
 
-  /* Given the current storage status of the BlockManager, returns information for each RDD */
-  def rddInfoFromStorageStatus(storageStatusList: Array[StorageStatus],
+  /* Returns RDD-level information, compiled from a list of StorageStatus objects */
+  def rddInfoFromStorageStatus(storageStatusList: Seq[StorageStatus],
     sc: SparkContext) : Array[RDDInfo] = {
     rddInfoFromBlockStatusList(storageStatusList.flatMap(_.blocks).toMap, sc)
   }
 
+  /* Returns a map of blocks to their locations, compiled from a list of StorageStatus objects */
+  def blockLocationsFromStorageStatus(storageStatusList: Seq[StorageStatus]) = {
+    val blockLocationPairs = storageStatusList
+      .flatMap(s => s.blocks.map(b => (b._1, s.blockManagerId.hostPort)))
+    blockLocationPairs.groupBy(_._1).map{case (k, v) => (k, v.unzip._2)}.toMap
+  }
+
   /* Given a list of BlockStatus objets, returns information for each RDD */
   def rddInfoFromBlockStatusList(infos: Map[String, BlockStatus],
     sc: SparkContext) : Array[RDDInfo] = {
diff --git a/core/src/main/scala/spark/storage/ThreadingTest.scala b/core/src/main/scala/spark/storage/ThreadingTest.scala
index 5c406e68cb..b3ab1ff4b4 100644
--- a/core/src/main/scala/spark/storage/ThreadingTest.scala
+++ b/core/src/main/scala/spark/storage/ThreadingTest.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.storage
 
 import akka.actor._
diff --git a/core/src/main/scala/spark/ui/JettyUtils.scala b/core/src/main/scala/spark/ui/JettyUtils.scala
new file mode 100644
index 0000000000..ca6088ad93
--- /dev/null
+++ b/core/src/main/scala/spark/ui/JettyUtils.scala
@@ -0,0 +1,132 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui
+
+import annotation.tailrec
+
+import javax.servlet.http.{HttpServletResponse, HttpServletRequest}
+
+import net.liftweb.json.{JValue, pretty, render}
+
+import org.eclipse.jetty.server.{Server, Request, Handler}
+import org.eclipse.jetty.server.handler.{ResourceHandler, HandlerList, ContextHandler, AbstractHandler}
+import org.eclipse.jetty.util.thread.QueuedThreadPool
+
+import scala.util.{Try, Success, Failure}
+import scala.xml.Node
+
+import spark.Logging
+
+/** Utilities for launching a web server using Jetty's HTTP Server class */
+private[spark] object JettyUtils extends Logging {
+  // Base type for a function that returns something based on an HTTP request. Allows for
+  // implicit conversion from many types of functions to jetty Handlers.
+  type Responder[T] = HttpServletRequest => T
+
+  // Conversions from various types of Responder's to jetty Handlers
+  implicit def jsonResponderToHandler(responder: Responder[JValue]): Handler =
+    createHandler(responder, "text/json", (in: JValue) => pretty(render(in)))
+
+  implicit def htmlResponderToHandler(responder: Responder[Seq[Node]]): Handler =
+    createHandler(responder, "text/html", (in: Seq[Node]) => "<!DOCTYPE html>" + in.toString)
+
+  implicit def textResponderToHandler(responder: Responder[String]): Handler =
+    createHandler(responder, "text/plain")
+
+  private def createHandler[T <% AnyRef](responder: Responder[T], contentType: String,
+                                 extractFn: T => String = (in: Any) => in.toString): Handler = {
+    new AbstractHandler {
+      def handle(target: String,
+                 baseRequest: Request,
+                 request: HttpServletRequest,
+                 response: HttpServletResponse) {
+        response.setContentType("%s;charset=utf-8".format(contentType))
+        response.setStatus(HttpServletResponse.SC_OK)
+        baseRequest.setHandled(true)
+        val result = responder(request)
+        response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate")
+        response.getWriter().println(extractFn(result))
+      }
+    }
+  }
+
+  /** Creates a handler that always redirects the user to a given path */
+  def createRedirectHandler(newPath: String): Handler = {
+    new AbstractHandler {
+      def handle(target: String,
+                 baseRequest: Request,
+                 request: HttpServletRequest,
+                 response: HttpServletResponse) {
+        response.setStatus(302)
+        response.setHeader("Location", baseRequest.getRootURL + newPath)
+        baseRequest.setHandled(true)
+      }
+    }
+  }
+
+  /** Creates a handler for serving files from a static directory */
+  def createStaticHandler(resourceBase: String): ResourceHandler = {
+    val staticHandler = new ResourceHandler
+    Option(getClass.getClassLoader.getResource(resourceBase)) match {
+      case Some(res) =>
+        staticHandler.setResourceBase(res.toString)
+      case None =>
+        throw new Exception("Could not find resource path for Web UI: " + resourceBase)
+    }
+    staticHandler
+  }
+
+  /**
+   * Attempts to start a Jetty server at the supplied ip:port which uses the supplied handlers.
+   *
+   * If the desired port number is contented, continues incrementing ports until a free port is
+   * found. Returns the chosen port and the jetty Server object.
+   */
+  def startJettyServer(ip: String, port: Int, handlers: Seq[(String, Handler)]): (Server, Int) = {
+    val handlersToRegister = handlers.map { case(path, handler) =>
+      val contextHandler = new ContextHandler(path)
+      contextHandler.setHandler(handler)
+      contextHandler.asInstanceOf[org.eclipse.jetty.server.Handler]
+    }
+
+    val handlerList = new HandlerList
+    handlerList.setHandlers(handlersToRegister.toArray)
+
+    @tailrec
+    def connect(currentPort: Int): (Server, Int) = {
+      val server = new Server(currentPort)
+      val pool = new QueuedThreadPool
+      pool.setDaemon(true)
+      server.setThreadPool(pool)
+      server.setHandler(handlerList)
+
+      Try { server.start() } match {
+        case s: Success[_] =>
+          sys.addShutdownHook(server.stop()) // Be kind, un-bind
+          (server, server.getConnectors.head.getLocalPort)
+        case f: Failure[_] =>
+          server.stop()
+          logInfo("Failed to create UI at port, %s. Trying again.".format(currentPort))
+          logInfo("Error was: " + f.toString)
+          connect((currentPort + 1) % 65536)
+      }
+    }
+
+    connect(port)
+  }
+}
diff --git a/core/src/main/scala/spark/ui/Page.scala b/core/src/main/scala/spark/ui/Page.scala
new file mode 100644
index 0000000000..a31e750d06
--- /dev/null
+++ b/core/src/main/scala/spark/ui/Page.scala
@@ -0,0 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui
+
+private[spark] object Page extends Enumeration { val Storage, Jobs, Environment = Value }
diff --git a/core/src/main/scala/spark/ui/SparkUI.scala b/core/src/main/scala/spark/ui/SparkUI.scala
new file mode 100644
index 0000000000..9396f22063
--- /dev/null
+++ b/core/src/main/scala/spark/ui/SparkUI.scala
@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui
+
+import javax.servlet.http.HttpServletRequest
+
+import org.eclipse.jetty.server.{Handler, Server}
+
+import spark.{Logging, SparkContext, Utils}
+import spark.ui.env.EnvironmentUI
+import spark.ui.storage.BlockManagerUI
+import spark.ui.jobs.JobProgressUI
+import spark.ui.JettyUtils._
+
+/** Top level user interface for Spark */
+private[spark] class SparkUI(sc: SparkContext) extends Logging {
+  val host = Utils.localHostName()
+  val port = Option(System.getProperty("spark.ui.port")).getOrElse(SparkUI.DEFAULT_PORT).toInt
+  var boundPort: Option[Int] = None
+  var server: Option[Server] = None
+
+  val handlers = Seq[(String, Handler)](
+    ("/static", createStaticHandler(SparkUI.STATIC_RESOURCE_DIR)),
+    ("/", createRedirectHandler("/stages"))
+  )
+  val storage = new BlockManagerUI(sc)
+  val jobs = new JobProgressUI(sc)
+  val env = new EnvironmentUI(sc)
+  val allHandlers = storage.getHandlers ++ jobs.getHandlers ++ env.getHandlers ++ handlers
+
+  /** Bind the HTTP server which backs this web interface */
+  def bind() {
+    try {
+      val (srv, usedPort) = JettyUtils.startJettyServer("0.0.0.0", port, allHandlers)
+      logInfo("Started Spark Web UI at http://%s:%d".format(host, usedPort))
+      server = Some(srv)
+      boundPort = Some(usedPort)
+    } catch {
+    case e: Exception =>
+      logError("Failed to create Spark JettyUtils", e)
+      System.exit(1)
+    }
+  }
+
+  /** Initialize all components of the server */
+  def start() {
+    // NOTE: This is decoupled from bind() because of the following dependency cycle:
+    //  DAGScheduler() requires that the port of this server is known
+    //  This server must register all handlers, including JobProgressUI, before binding
+    //  JobProgressUI registers a listener with SparkContext, which requires sc to initialize
+    jobs.start()
+  }
+
+  def stop() {
+    server.foreach(_.stop())
+  }
+
+  private[spark] def appUIAddress = "http://" + host + ":" + boundPort.getOrElse("-1")
+}
+
+private[spark] object SparkUI {
+  val DEFAULT_PORT = "33000"
+  val STATIC_RESOURCE_DIR = "spark/ui/static"
+}
diff --git a/core/src/main/scala/spark/ui/UIUtils.scala b/core/src/main/scala/spark/ui/UIUtils.scala
new file mode 100644
index 0000000000..b1d11954dd
--- /dev/null
+++ b/core/src/main/scala/spark/ui/UIUtils.scala
@@ -0,0 +1,135 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui
+
+import scala.xml.Node
+
+import spark.SparkContext
+
+/** Utility functions for generating XML pages with spark content. */
+private[spark] object UIUtils {
+  import Page._
+
+  /** Returns a spark page with correctly formatted headers */
+  def headerSparkPage(content: => Seq[Node], sc: SparkContext, title: String, page: Page.Value)
+  : Seq[Node] = {
+    val storage = page match {
+      case Storage => <li class="active"><a href="/storage">Storage</a></li>
+      case _ => <li><a href="/storage">Storage</a></li>
+    }
+    val jobs = page match {
+      case Jobs => <li class="active"><a href="/stages">Jobs</a></li>
+      case _ => <li><a href="/stages">Jobs</a></li>
+    }
+    val environment = page match {
+      case Environment => <li class="active"><a href="/environment">Environment</a></li>
+      case _ => <li><a href="/environment">Environment</a></li>
+    }
+
+    <html>
+      <head>
+        <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
+        <link rel="stylesheet" href="/static/bootstrap.min.css" type="text/css" />
+        <link rel="stylesheet" href="/static/webui.css" type="text/css" />
+        <link rel="stylesheet" href="/static/bootstrap-responsive.min.css" type="text/css" />
+        <script src="/static/sorttable.js"></script>
+        <title>{sc.appName} - {title}</title>
+        <style type="text/css">
+          table.sortable thead {{ cursor: pointer; }}
+        </style>
+      </head>
+      <body>
+        <div class="container">
+
+          <div class="row">
+            <div class="span12">
+              <div class="navbar">
+                <div class="navbar-inner">
+                  <div class="container">
+                    <div class="brand"><img src="/static/spark-logo-77x50px-hd.png" /></div>
+                    <ul class="nav">
+                      {storage}
+                      {jobs}
+                      {environment}
+                    </ul>
+                    <ul id="infolist">
+                      <li>Application: <strong>{sc.appName}</strong></li>
+                      <li>Master: <strong>{sc.master}</strong></li>
+                      <li>Executors: <strong>{sc.getExecutorStorageStatus.size}</strong></li>
+                    </ul>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+
+          <div class="row" style="padding-top: 5px;">
+            <div class="span12">
+              <h1 style="vertical-align: bottom; display: inline-block;">
+                {title}
+              </h1>
+            </div>
+          </div>
+          <hr/>
+          {content}
+        </div>
+      </body>
+    </html>
+  }
+
+  /** Returns a page with the spark css/js and a simple format. Used for scheduler UI. */
+  def basicSparkPage(content: => Seq[Node], title: String): Seq[Node] = {
+    <html>
+      <head>
+        <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
+        <link rel="stylesheet" href="/static/bootstrap.min.css" type="text/css" />
+        <link rel="stylesheet" href="/static/bootstrap-responsive.min.css" type="text/css" />
+        <script src="/static/sorttable.js"></script>
+        <title>{title}</title>
+        <style type="text/css">
+          table.sortable thead {{ cursor: pointer; }}
+        </style>
+      </head>
+      <body>
+        <div class="container">
+          <div class="row">
+            <div class="span2">
+              <img src="/static/spark_logo.png" />
+            </div>
+            <div class="span10">
+              <h1 style="vertical-align: bottom; margin-top: 40px; display: inline-block;">
+                {title}
+              </h1>
+            </div>
+          </div>
+          {content}
+        </div>
+      </body>
+    </html>
+  }
+
+  /** Returns an HTML table constructed by generating a row for each object in a sequence. */
+  def listingTable[T](headers: Seq[String], makeRow: T => Seq[Node], rows: Seq[T]): Seq[Node] = {
+    <table class="table table-bordered table-striped table-condensed sortable">
+      <thead>{headers.map(h => <th>{h}</th>)}</thead>
+      <tbody>
+        {rows.map(r => makeRow(r))}
+      </tbody>
+    </table>
+  }
+}
diff --git a/core/src/main/scala/spark/ui/UIWorkloadGenerator.scala b/core/src/main/scala/spark/ui/UIWorkloadGenerator.scala
new file mode 100644
index 0000000000..a80e2d7002
--- /dev/null
+++ b/core/src/main/scala/spark/ui/UIWorkloadGenerator.scala
@@ -0,0 +1,88 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui
+
+import scala.util.Random
+
+import spark.SparkContext
+import spark.SparkContext._
+
+/**
+ * Continuously generates jobs that expose various features of the WebUI (internal testing tool).
+ *
+ * Usage: ./run spark.ui.UIWorkloadGenerator [master]
+ */
+private[spark] object UIWorkloadGenerator {
+  val NUM_PARTITIONS = 100
+  val INTER_JOB_WAIT_MS = 500
+
+  def main(args: Array[String]) {
+    val master = args(0)
+    val appName = "Spark UI Tester"
+    val sc = new SparkContext(master, appName)
+
+    // NOTE: Right now there is no easy way for us to show spark.job.annotation for a given phase,
+    //       but we pass it here anyways since it will be useful once we do.
+    def setName(s: String) = {
+      sc.addLocalProperties("spark.job.annotation", s)
+    }
+    val baseData = sc.makeRDD(1 to NUM_PARTITIONS * 10, NUM_PARTITIONS)
+    def nextFloat() = (new Random()).nextFloat()
+
+    val jobs = Seq[(String, () => Long)](
+      ("Count", baseData.count),
+      ("Cache and Count", baseData.map(x => x).cache.count),
+      ("Single Shuffle", baseData.map(x => (x % 10, x)).reduceByKey(_ + _).count),
+      ("Entirely failed phase", baseData.map(x => throw new Exception).count),
+      ("Partially failed phase", {
+        baseData.map{x =>
+          val probFailure = (4.0 / NUM_PARTITIONS)
+          if (nextFloat() < probFailure) {
+            throw new Exception("This is a task failure")
+          }
+          1
+        }.count
+      }),
+      ("Partially failed phase (longer tasks)", {
+        baseData.map{x =>
+          val probFailure = (4.0 / NUM_PARTITIONS)
+          if (nextFloat() < probFailure) {
+            Thread.sleep(100)
+            throw new Exception("This is a task failure")
+          }
+          1
+        }.count
+      }),
+      ("Job with delays", baseData.map(x => Thread.sleep(100)).count)
+    )
+
+    while (true) {
+      for ((desc, job) <- jobs) {
+        try {
+          setName(desc)
+          job()
+          println("Job funished: " + desc)
+        } catch {
+          case e: Exception =>
+            println("Job Failed: " + desc)
+        }
+        Thread.sleep(INTER_JOB_WAIT_MS)
+      }
+    }
+  }
+}
diff --git a/core/src/main/scala/spark/ui/env/EnvironmentUI.scala b/core/src/main/scala/spark/ui/env/EnvironmentUI.scala
new file mode 100644
index 0000000000..5ae7935ed4
--- /dev/null
+++ b/core/src/main/scala/spark/ui/env/EnvironmentUI.scala
@@ -0,0 +1,86 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui.env
+
+import javax.servlet.http.HttpServletRequest
+
+import org.eclipse.jetty.server.Handler
+
+import scala.collection.JavaConversions._
+import scala.util.Properties
+
+import spark.ui.JettyUtils._
+import spark.ui.UIUtils.headerSparkPage
+import spark.ui.Page.Environment
+import spark.SparkContext
+import spark.ui.UIUtils
+
+import scala.xml.Node
+
+private[spark] class EnvironmentUI(sc: SparkContext) {
+
+  def getHandlers = Seq[(String, Handler)](
+    ("/environment", (request: HttpServletRequest) => envDetails(request))
+  )
+
+  def envDetails(request: HttpServletRequest): Seq[Node] = {
+    val jvmInformation = Seq(
+      ("Java Version", "%s (%s)".format(Properties.javaVersion, Properties.javaVendor)),
+      ("Java Home", Properties.javaHome),
+      ("Scala Version", Properties.versionString),
+      ("Scala Home", Properties.scalaHome)
+    )
+    def jvmRow(kv: (String, String)) = <tr><td>{kv._1}</td><td>{kv._2}</td></tr>
+    def jvmTable = UIUtils.listingTable(Seq("Name", "Value"), jvmRow, jvmInformation)
+
+    val properties = System.getProperties.iterator.toSeq
+    val classPathProperty = properties
+        .filter{case (k, v) => k.contains("java.class.path")}
+        .headOption
+        .getOrElse("", "")
+    val sparkProperties = properties.filter(_._1.startsWith("spark"))
+    val otherProperties = properties.diff(sparkProperties :+ classPathProperty)
+
+    val propertyHeaders = Seq("Name", "Value")
+    def propertyRow(kv: (String, String)) = <tr><td>{kv._1}</td><td>{kv._2}</td></tr>
+    val sparkPropertyTable = UIUtils.listingTable(propertyHeaders, propertyRow, sparkProperties)
+    val otherPropertyTable = UIUtils.listingTable(propertyHeaders, propertyRow, otherProperties)
+
+    val classPathEntries = classPathProperty._2
+        .split(System.getProperty("path.separator", ":"))
+        .filterNot(e => e.isEmpty)
+        .map(e => (e, "System Classpath"))
+    val addedJars = sc.addedJars.iterator.toSeq.map{case (path, time) => (path, "Added By User")}
+    val addedFiles = sc.addedFiles.iterator.toSeq.map{case (path, time) => (path, "Added By User")}
+    val classPath = addedJars ++ addedFiles ++ classPathEntries
+
+    val classPathHeaders = Seq("Resource", "Source")
+    def classPathRow(data: (String, String)) = <tr><td>{data._1}</td><td>{data._2}</td></tr>
+    val classPathTable = UIUtils.listingTable(classPathHeaders, classPathRow, classPath)
+
+    val content =
+      <span>
+        <h2>Runtime Information</h2> {jvmTable}
+        <h2>Spark Properties</h2> {sparkPropertyTable}
+        <h2>System Properties</h2> {otherPropertyTable}
+        <h2>Classpath Entries</h2> {classPathTable}
+      </span>
+
+    headerSparkPage(content, sc, "Environment", Environment)
+  }
+}
diff --git a/core/src/main/scala/spark/ui/jobs/IndexPage.scala b/core/src/main/scala/spark/ui/jobs/IndexPage.scala
new file mode 100644
index 0000000000..f31af3cda6
--- /dev/null
+++ b/core/src/main/scala/spark/ui/jobs/IndexPage.scala
@@ -0,0 +1,129 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui.jobs
+
+import java.util.Date
+
+import javax.servlet.http.HttpServletRequest
+
+import scala.Some
+import scala.xml.{NodeSeq, Node}
+
+import spark.scheduler.Stage
+import spark.ui.UIUtils._
+import spark.ui.Page._
+import spark.storage.StorageLevel
+
+/** Page showing list of all ongoing and recently finished stages */
+private[spark] class IndexPage(parent: JobProgressUI) {
+  def listener = parent.listener
+  val dateFmt = parent.dateFmt
+
+  def render(request: HttpServletRequest): Seq[Node] = {
+    val activeStages = listener.activeStages.toSeq
+    val completedStages = listener.completedStages.reverse.toSeq
+    val failedStages = listener.failedStages.reverse.toSeq
+
+    /** Special table which merges two header cells. */
+    def stageTable[T](makeRow: T => Seq[Node], rows: Seq[T]): Seq[Node] = {
+      <table class="table table-bordered table-striped table-condensed sortable">
+        <thead>
+          <th>Stage Id</th>
+          <th>Origin</th>
+          <th>Submitted</th>
+          <th>Duration</th>
+          <th colspan="2">Tasks: Complete/Total</th>
+          <th>Shuffle Activity</th>
+          <th>Stored RDD</th>
+        </thead>
+        <tbody>
+          {rows.map(r => makeRow(r))}
+        </tbody>
+      </table>
+    }
+
+    val activeStageTable: NodeSeq = stageTable(stageRow, activeStages)
+    val completedStageTable = stageTable(stageRow, completedStages)
+    val failedStageTable: NodeSeq = stageTable(stageRow, failedStages)
+
+    val content = <h2>Active Stages</h2> ++ activeStageTable ++
+                  <h2>Completed Stages</h2>  ++ completedStageTable ++
+                  <h2>Failed Stages</h2>  ++ failedStageTable
+
+    headerSparkPage(content, parent.sc, "Spark Stages", Jobs)
+  }
+
+  def getElapsedTime(submitted: Option[Long], completed: Long): String = {
+    submitted match {
+      case Some(t) => parent.formatDuration(completed - t)
+      case _ => "Unknown"
+    }
+  }
+
+  def makeProgressBar(completed: Int, total: Int): Seq[Node] = {
+    val width=130
+    val height=15
+    val completeWidth = (completed.toDouble / total) * width
+
+    <svg width={width.toString} height={height.toString}>
+      <rect width={width.toString} height={height.toString}
+            fill="white" stroke="rgb(51,51,51)" stroke-width="1" />
+      <rect width={completeWidth.toString} height={height.toString}
+            fill="rgb(0,136,204)" stroke="black" stroke-width="1" />
+    </svg>
+  }
+
+
+  def stageRow(s: Stage): Seq[Node] = {
+    val submissionTime = s.submissionTime match {
+      case Some(t) => dateFmt.format(new Date(t))
+      case None => "Unknown"
+    }
+    val (read, write) = (listener.hasShuffleRead(s.id), listener.hasShuffleWrite(s.id))
+    val shuffleInfo = (read, write) match {
+      case (true, true) => "Read/Write"
+      case (true, false) => "Read"
+      case (false, true) => "Write"
+      case _ => ""
+    }
+    val completedTasks = listener.stageToTasksComplete.getOrElse(s.id, 0)
+    val totalTasks = s.numPartitions
+
+    <tr>
+      <td>{s.id}</td>
+      <td><a href={"/stages/stage?id=%s".format(s.id)}>{s.name}</a></td>
+      <td>{submissionTime}</td>
+      <td>{getElapsedTime(s.submissionTime,
+             s.completionTime.getOrElse(System.currentTimeMillis()))}</td>
+      <td class="progress-cell">{makeProgressBar(completedTasks, totalTasks)}</td>
+      <td style="border-left: 0; text-align: center;">{completedTasks} / {totalTasks}
+        {listener.stageToTasksFailed.getOrElse(s.id, 0) match {
+        case f if f > 0 => "(%s failed)".format(f)
+        case _ =>
+      }}
+      </td>
+      <td>{shuffleInfo}</td>
+      <td>{if (s.rdd.getStorageLevel != StorageLevel.NONE) {
+             <a href={"/storage/rdd?id=%s".format(s.rdd.id)}>
+               {Option(s.rdd.name).getOrElse(s.rdd.id)}
+             </a>
+          }}
+      </td>
+    </tr>
+  }
+}
diff --git a/core/src/main/scala/spark/ui/jobs/JobProgressUI.scala b/core/src/main/scala/spark/ui/jobs/JobProgressUI.scala
new file mode 100644
index 0000000000..44dcf82d11
--- /dev/null
+++ b/core/src/main/scala/spark/ui/jobs/JobProgressUI.scala
@@ -0,0 +1,144 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui.jobs
+
+import akka.util.Duration
+
+import java.text.SimpleDateFormat
+
+import javax.servlet.http.HttpServletRequest
+
+import org.eclipse.jetty.server.Handler
+
+import scala.Seq
+import scala.collection.mutable.{HashSet, ListBuffer, HashMap, ArrayBuffer}
+
+import spark.ui.JettyUtils._
+import spark.{ExceptionFailure, SparkContext, Success, Utils}
+import spark.scheduler._
+import spark.scheduler.cluster.TaskInfo
+import spark.executor.TaskMetrics
+import collection.mutable
+
+/** Web UI showing progress status of all jobs in the given SparkContext. */
+private[spark] class JobProgressUI(val sc: SparkContext) {
+  private var _listener: Option[JobProgressListener] = None
+  def listener = _listener.get
+  val dateFmt = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss")
+
+  private val indexPage = new IndexPage(this)
+  private val stagePage = new StagePage(this)
+
+  def start() {
+    _listener = Some(new JobProgressListener)
+    sc.addSparkListener(listener)
+  }
+
+  def formatDuration(ms: Long) = Utils.msDurationToString(ms)
+
+  def getHandlers = Seq[(String, Handler)](
+    ("/stages/stage", (request: HttpServletRequest) => stagePage.render(request)),
+    ("/stages", (request: HttpServletRequest) => indexPage.render(request))
+  )
+}
+
+private[spark] class JobProgressListener extends SparkListener {
+  // How many stages to remember
+  val RETAINED_STAGES = System.getProperty("spark.ui.retained_stages", "1000").toInt
+
+  val activeStages = HashSet[Stage]()
+  val completedStages = ListBuffer[Stage]()
+  val failedStages = ListBuffer[Stage]()
+
+  val stageToTasksComplete = HashMap[Int, Int]()
+  val stageToTasksFailed = HashMap[Int, Int]()
+  val stageToTaskInfos =
+    HashMap[Int, ArrayBuffer[(TaskInfo, Option[TaskMetrics], Option[ExceptionFailure])]]()
+
+  override def onJobStart(jobStart: SparkListenerJobStart) {}
+
+  override def onStageCompleted(stageCompleted: StageCompleted) = {
+    val stage = stageCompleted.stageInfo.stage
+    activeStages -= stage
+    completedStages += stage
+    trimIfNecessary(completedStages)
+  }
+
+  /** If stages is too large, remove and garbage collect old stages */
+  def trimIfNecessary(stages: ListBuffer[Stage]) {
+    if (stages.size > RETAINED_STAGES) {
+      val toRemove = RETAINED_STAGES / 10
+      stages.takeRight(toRemove).foreach( s => {
+        stageToTaskInfos.remove(s.id)
+      })
+      stages.trimEnd(toRemove)
+    }
+  }
+
+  override def onStageSubmitted(stageSubmitted: SparkListenerStageSubmitted) =
+    activeStages += stageSubmitted.stage
+
+  override def onTaskEnd(taskEnd: SparkListenerTaskEnd) {
+    val sid = taskEnd.task.stageId
+    val (failureInfo, metrics): (Option[ExceptionFailure], Option[TaskMetrics]) =
+      taskEnd.reason match {
+        case e: ExceptionFailure =>
+          stageToTasksFailed(sid) = stageToTasksFailed.getOrElse(sid, 0) + 1
+          (Some(e), e.metrics)
+        case _ =>
+          stageToTasksComplete(sid) = stageToTasksComplete.getOrElse(sid, 0) + 1
+          (None, Some(taskEnd.taskMetrics))
+      }
+    val taskList = stageToTaskInfos.getOrElse(
+      sid, ArrayBuffer[(TaskInfo, Option[TaskMetrics], Option[ExceptionFailure])]())
+    taskList += ((taskEnd.taskInfo, metrics, failureInfo))
+    stageToTaskInfos(sid) = taskList
+  }
+
+  override def onJobEnd(jobEnd: SparkListenerJobEnd) {
+    jobEnd match {
+      case end: SparkListenerJobEnd =>
+        end.jobResult match {
+          case JobFailed(ex, Some(stage)) =>
+            activeStages -= stage
+            failedStages += stage
+            trimIfNecessary(failedStages)
+          case _ =>
+        }
+      case _ =>
+    }
+  }
+
+  /** Is this stage's input from a shuffle read. */
+  def hasShuffleRead(stageID: Int): Boolean = {
+    // This is written in a slightly complicated way to avoid having to scan all tasks
+    for (s <- stageToTaskInfos.get(stageID).getOrElse(Seq())) {
+      if (s._2 != null) return s._2.flatMap(m => m.shuffleReadMetrics).isDefined
+    }
+    return false // No tasks have finished for this stage
+  }
+
+  /** Is this stage's output to a shuffle write. */
+  def hasShuffleWrite(stageID: Int): Boolean = {
+    // This is written in a slightly complicated way to avoid having to scan all tasks
+    for (s <- stageToTaskInfos.get(stageID).getOrElse(Seq())) {
+      if (s._2 != null) return s._2.flatMap(m => m.shuffleWriteMetrics).isDefined
+    }
+    return false // No tasks have finished for this stage
+  }
+}
diff --git a/core/src/main/scala/spark/ui/jobs/StagePage.scala b/core/src/main/scala/spark/ui/jobs/StagePage.scala
new file mode 100644
index 0000000000..292966f23a
--- /dev/null
+++ b/core/src/main/scala/spark/ui/jobs/StagePage.scala
@@ -0,0 +1,131 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui.jobs
+
+import java.util.Date
+
+import javax.servlet.http.HttpServletRequest
+
+import scala.xml.Node
+
+import spark.ui.UIUtils._
+import spark.ui.Page._
+import spark.util.Distribution
+import spark.{ExceptionFailure, Utils}
+import spark.scheduler.cluster.TaskInfo
+import spark.executor.TaskMetrics
+
+/** Page showing statistics and task list for a given stage */
+private[spark] class StagePage(parent: JobProgressUI) {
+  def listener = parent.listener
+  val dateFmt = parent.dateFmt
+
+  def render(request: HttpServletRequest): Seq[Node] = {
+    val stageId = request.getParameter("id").toInt
+
+    if (!listener.stageToTaskInfos.contains(stageId)) {
+      val content =
+        <div>
+          <h2>Summary Metrics</h2> No tasks have finished yet
+          <h2>Tasks</h2> No tasks have finished yet
+        </div>
+      return headerSparkPage(content, parent.sc, "Stage Details: %s".format(stageId), Jobs)
+    }
+
+    val tasks = listener.stageToTaskInfos(stageId)
+
+    val shuffleRead = listener.hasShuffleRead(stageId)
+    val shuffleWrite = listener.hasShuffleWrite(stageId)
+
+    val taskHeaders: Seq[String] =
+      Seq("Task ID", "Duration", "Locality Level", "Worker", "Launch Time") ++
+        {if (shuffleRead) Seq("Shuffle Read")  else Nil} ++
+        {if (shuffleWrite) Seq("Shuffle Write") else Nil} ++
+      Seq("Details")
+
+    val taskTable = listingTable(taskHeaders, taskRow, tasks)
+
+    // Excludes tasks which failed and have incomplete metrics
+    val validTasks = tasks.filter(t => Option(t._2).isDefined)
+
+    val summaryTable: Option[Seq[Node]] =
+      if (validTasks.size == 0) {
+        None
+      }
+      else {
+        val serviceTimes = validTasks.map{case (info, metrics, exception) =>
+          metrics.get.executorRunTime.toDouble}
+        val serviceQuantiles = "Duration" +: Distribution(serviceTimes).get.getQuantiles().map(
+          ms => parent.formatDuration(ms.toLong))
+
+        def getQuantileCols(data: Seq[Double]) =
+          Distribution(data).get.getQuantiles().map(d => Utils.memoryBytesToString(d.toLong))
+
+        val shuffleReadSizes = validTasks.map {
+          case(info, metrics, exception) =>
+            metrics.get.shuffleReadMetrics.map(_.remoteBytesRead).getOrElse(0L).toDouble
+        }
+        val shuffleReadQuantiles = "Shuffle Read (Remote)" +: getQuantileCols(shuffleReadSizes)
+
+        val shuffleWriteSizes = validTasks.map {
+          case(info, metrics, exception) =>
+            metrics.get.shuffleWriteMetrics.map(_.shuffleBytesWritten).getOrElse(0L).toDouble
+        }
+        val shuffleWriteQuantiles = "Shuffle Write" +: getQuantileCols(shuffleWriteSizes)
+
+        val listings: Seq[Seq[String]] = Seq(serviceQuantiles,
+          if (shuffleRead) shuffleReadQuantiles else Nil,
+          if (shuffleWrite) shuffleWriteQuantiles else Nil)
+
+        val quantileHeaders = Seq("Metric", "Min", "25%", "50%", "75%", "Max")
+        def quantileRow(data: Seq[String]): Seq[Node] = <tr> {data.map(d => <td>{d}</td>)} </tr>
+        Some(listingTable(quantileHeaders, quantileRow, listings))
+      }
+
+    val content =
+      <h2>Summary Metrics</h2> ++ summaryTable.getOrElse(Nil) ++ <h2>Tasks</h2> ++ taskTable;
+
+    headerSparkPage(content, parent.sc, "Stage Details: %s".format(stageId), Jobs)
+  }
+
+
+  def taskRow(taskData: (TaskInfo, Option[TaskMetrics], Option[ExceptionFailure])): Seq[Node] = {
+    def fmtStackTrace(trace: Seq[StackTraceElement]): Seq[Node] =
+      trace.map(e => <span style="display:block;">{e.toString}</span>)
+    val (info, metrics, exception) = taskData
+    <tr>
+      <td>{info.taskId}</td>
+      <td sorttable_customkey={metrics.map{m => m.executorRunTime.toString}.getOrElse("1")}>
+        {metrics.map{m => parent.formatDuration(m.executorRunTime)}.getOrElse("")}
+      </td>
+      <td>{info.taskLocality}</td>
+      <td>{info.hostPort}</td>
+      <td>{dateFmt.format(new Date(info.launchTime))}</td>
+      {metrics.flatMap{m => m.shuffleReadMetrics}.map{s =>
+        <td>{Utils.memoryBytesToString(s.remoteBytesRead)}</td>}.getOrElse("")}
+      {metrics.flatMap{m => m.shuffleWriteMetrics}.map{s =>
+        <td>{Utils.memoryBytesToString(s.shuffleBytesWritten)}</td>}.getOrElse("")}
+      <td>{exception.map(e =>
+        <span>
+          {e.className} ({e.description})<br/>
+          {fmtStackTrace(e.stackTrace)}
+        </span>).getOrElse("")}
+      </td>
+    </tr>
+  }
+}
diff --git a/core/src/main/scala/spark/ui/storage/BlockManagerUI.scala b/core/src/main/scala/spark/ui/storage/BlockManagerUI.scala
new file mode 100644
index 0000000000..49ed069c75
--- /dev/null
+++ b/core/src/main/scala/spark/ui/storage/BlockManagerUI.scala
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui.storage
+
+import akka.util.Duration
+
+import javax.servlet.http.HttpServletRequest
+
+import org.eclipse.jetty.server.Handler
+
+import spark.{Logging, SparkContext}
+import spark.ui.JettyUtils._
+
+/** Web UI showing storage status of all RDD's in the given SparkContext. */
+private[spark] class BlockManagerUI(val sc: SparkContext) extends Logging {
+  implicit val timeout = Duration.create(
+    System.getProperty("spark.akka.askTimeout", "10").toLong, "seconds")
+
+  val indexPage = new IndexPage(this)
+  val rddPage = new RDDPage(this)
+
+  def getHandlers = Seq[(String, Handler)](
+    ("/storage/rdd", (request: HttpServletRequest) => rddPage.render(request)),
+    ("/storage", (request: HttpServletRequest) => indexPage.render(request))
+  )
+}
diff --git a/core/src/main/scala/spark/ui/storage/IndexPage.scala b/core/src/main/scala/spark/ui/storage/IndexPage.scala
new file mode 100644
index 0000000000..4e0360d19a
--- /dev/null
+++ b/core/src/main/scala/spark/ui/storage/IndexPage.scala
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui.storage
+
+import javax.servlet.http.HttpServletRequest
+
+import scala.xml.Node
+
+import spark.storage.{RDDInfo, StorageUtils}
+import spark.Utils
+import spark.ui.UIUtils._
+import spark.ui.Page._
+
+/** Page showing list of RDD's currently stored in the cluster */
+private[spark] class IndexPage(parent: BlockManagerUI) {
+  val sc = parent.sc
+
+  def render(request: HttpServletRequest): Seq[Node] = {
+    val storageStatusList = sc.getExecutorStorageStatus
+    // Calculate macro-level statistics
+    val maxMem = storageStatusList.map(_.maxMem).reduce(_+_)
+    val remainingMem = storageStatusList.map(_.memRemaining).reduce(_+_)
+    val diskSpaceUsed = storageStatusList.flatMap(_.blocks.values.map(_.diskSize))
+      .reduceOption(_+_).getOrElse(0L)
+
+    val rddHeaders = Seq(
+      "RDD Name",
+      "Storage Level",
+      "Cached Partitions",
+      "Fraction Partitions Cached",
+      "Size in Memory",
+      "Size on Disk")
+    val rdds = StorageUtils.rddInfoFromStorageStatus(storageStatusList, sc)
+    val rddTable = listingTable(rddHeaders, rddRow, rdds)
+
+    val content =
+      <div class="row">
+        <div class="span12">
+          <ul class="unstyled">
+            <li><strong>Memory:</strong>
+              {Utils.memoryBytesToString(maxMem - remainingMem)} Used
+              ({Utils.memoryBytesToString(remainingMem)} Available) </li>
+            <li><strong>Disk:</strong> {Utils.memoryBytesToString(diskSpaceUsed)} Used </li>
+          </ul>
+        </div>
+      </div> ++ {rddTable};
+
+    headerSparkPage(content, parent.sc, "Spark Storage ", Storage)
+  }
+
+  def rddRow(rdd: RDDInfo): Seq[Node] = {
+    <tr>
+      <td>
+        <a href={"/storage/rdd?id=%s".format(rdd.id)}>
+          {rdd.name}
+        </a>
+      </td>
+      <td>{rdd.storageLevel.description}
+      </td>
+      <td>{rdd.numCachedPartitions}</td>
+      <td>{rdd.numCachedPartitions / rdd.numPartitions.toDouble}</td>
+      <td>{Utils.memoryBytesToString(rdd.memSize)}</td>
+      <td>{Utils.memoryBytesToString(rdd.diskSize)}</td>
+    </tr>
+  }
+}
diff --git a/core/src/main/scala/spark/ui/storage/RDDPage.scala b/core/src/main/scala/spark/ui/storage/RDDPage.scala
new file mode 100644
index 0000000000..003be54ad8
--- /dev/null
+++ b/core/src/main/scala/spark/ui/storage/RDDPage.scala
@@ -0,0 +1,130 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package spark.ui.storage
+
+import javax.servlet.http.HttpServletRequest
+
+import scala.xml.Node
+
+import spark.storage.{StorageStatus, StorageUtils}
+import spark.ui.UIUtils._
+import spark.Utils
+import spark.storage.BlockManagerMasterActor.BlockStatus
+import spark.ui.Page._
+
+/** Page showing storage details for a given RDD */
+private[spark] class RDDPage(parent: BlockManagerUI) {
+  val sc = parent.sc
+
+  def render(request: HttpServletRequest): Seq[Node] = {
+    val id = request.getParameter("id")
+    val prefix = "rdd_" + id.toString
+    val storageStatusList = sc.getExecutorStorageStatus
+    val filteredStorageStatusList = StorageUtils.
+      filterStorageStatusByPrefix(storageStatusList, prefix)
+    val rddInfo = StorageUtils.rddInfoFromStorageStatus(filteredStorageStatusList, sc).head
+
+    val workerHeaders = Seq("Host", "Memory Usage", "Disk Usage")
+    val workers = filteredStorageStatusList.map((prefix, _))
+    val workerTable = listingTable(workerHeaders, workerRow, workers)
+
+    val blockHeaders = Seq("Block Name", "Storage Level", "Size in Memory", "Size on Disk",
+      "Locations")
+
+    val blockStatuses = filteredStorageStatusList.flatMap(_.blocks).toArray.sortWith(_._1 < _._1)
+    val blockLocations = StorageUtils.blockLocationsFromStorageStatus(filteredStorageStatusList)
+    val blocks = blockStatuses.map {
+      case(id, status) => (id, status, blockLocations.get(id).getOrElse(Seq("UNKNOWN")))
+    }
+    val blockTable = listingTable(blockHeaders, blockRow, blocks)
+
+    val content =
+      <div class="row">
+        <div class="span12">
+          <ul class="unstyled">
+            <li>
+              <strong>Storage Level:</strong>
+              {rddInfo.storageLevel.description}
+            </li>
+            <li>
+              <strong>Cached Partitions:</strong>
+              {rddInfo.numCachedPartitions}
+            </li>
+            <li>
+              <strong>Total Partitions:</strong>
+              {rddInfo.numPartitions}
+            </li>
+            <li>
+              <strong>Memory Size:</strong>
+              {Utils.memoryBytesToString(rddInfo.memSize)}
+            </li>
+            <li>
+              <strong>Disk Size:</strong>
+              {Utils.memoryBytesToString(rddInfo.diskSize)}
+            </li>
+          </ul>
+        </div>
+      </div>
+      <hr/>
+      <div class="row">
+        <div class="span12">
+          {workerTable}
+        </div>
+      </div>
+      <hr/>
+      <div class="row">
+        <div class="span12">
+          <h3> RDD Summary </h3>
+          {blockTable}
+        </div>
+      </div>;
+
+    headerSparkPage(content, parent.sc, "RDD Info: " + rddInfo.name, Jobs)
+  }
+
+  def blockRow(row: (String, BlockStatus, Seq[String])): Seq[Node] = {
+    val (id, block, locations) = row
+    <tr>
+      <td>{id}</td>
+      <td>
+        {block.storageLevel.description}
+      </td>
+      <td sorttable_customkey={block.memSize.toString}>
+        {Utils.memoryBytesToString(block.memSize)}
+      </td>
+      <td sorttable_customkey={block.diskSize.toString}>
+        {Utils.memoryBytesToString(block.diskSize)}
+      </td>
+      <td>
+        {locations.map(l => <span>{l}<br/></span>)}
+      </td>
+    </tr>
+  }
+
+  def workerRow(worker: (String, StorageStatus)): Seq[Node] = {
+    val (prefix, status) = worker
+    <tr>
+      <td>{status.blockManagerId.host + ":" + status.blockManagerId.port}</td>
+      <td>
+        {Utils.memoryBytesToString(status.memUsed(prefix))}
+        ({Utils.memoryBytesToString(status.memRemaining)} Total Available)
+      </td>
+      <td>{Utils.memoryBytesToString(status.diskUsed(prefix))}</td>
+    </tr>
+  }
+}
diff --git a/core/src/main/scala/spark/util/AkkaUtils.scala b/core/src/main/scala/spark/util/AkkaUtils.scala
index e93cc3b485..9233277bdb 100644
--- a/core/src/main/scala/spark/util/AkkaUtils.scala
+++ b/core/src/main/scala/spark/util/AkkaUtils.scala
@@ -1,18 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
-import akka.actor.{ActorRef, Props, ActorSystemImpl, ActorSystem}
+import akka.actor.{ActorSystem, ExtendedActorSystem}
 import com.typesafe.config.ConfigFactory
 import akka.util.duration._
-import akka.pattern.ask
 import akka.remote.RemoteActorRefProvider
-import cc.spray.Route
-import cc.spray.io.IoWorker
-import cc.spray.{SprayCanRootService, HttpService}
-import cc.spray.can.server.HttpServer
-import cc.spray.io.pipelines.MessageHandlerDispatch.SingletonHandler
-import akka.dispatch.Await
-import spark.{Utils, SparkException}
-import java.util.concurrent.TimeoutException
+
 
 /**
  * Various utility classes for working with Akka.
@@ -56,36 +65,8 @@ private[spark] object AkkaUtils {
 
     // Figure out the port number we bound to, in case port was passed as 0. This is a bit of a
     // hack because Akka doesn't let you figure out the port through the public API yet.
-    val provider = actorSystem.asInstanceOf[ActorSystemImpl].provider
+    val provider = actorSystem.asInstanceOf[ExtendedActorSystem].provider
     val boundPort = provider.asInstanceOf[RemoteActorRefProvider].transport.address.port.get
     return (actorSystem, boundPort)
   }
-
-  /**
-   * Creates a Spray HTTP server bound to a given IP and port with a given Spray Route object to
-   * handle requests. Returns the bound port or throws a SparkException on failure.
-   * TODO: Not changing ip to host here - is it required ?
-   */
-  def startSprayServer(actorSystem: ActorSystem, ip: String, port: Int, route: Route,
-      name: String = "HttpServer"): ActorRef = {
-    val ioWorker = new IoWorker(actorSystem).start()
-    val httpService = actorSystem.actorOf(Props(new HttpService(route)))
-    val rootService = actorSystem.actorOf(Props(new SprayCanRootService(httpService)))
-    val server = actorSystem.actorOf(
-      Props(new HttpServer(ioWorker, SingletonHandler(rootService))), name = name)
-    actorSystem.registerOnTermination { ioWorker.stop() }
-    val timeout = 3.seconds
-    val future = server.ask(HttpServer.Bind(ip, port))(timeout)
-    try {
-      Await.result(future, timeout) match {
-        case bound: HttpServer.Bound =>
-          return server
-        case other: Any =>
-          throw new SparkException("Failed to bind web UI to port " + port + ": " + other)
-      }
-    } catch {
-      case e: TimeoutException =>
-        throw new SparkException("Failed to bind web UI to port " + port)
-    }
-  }
 }
diff --git a/core/src/main/scala/spark/util/BoundedPriorityQueue.scala b/core/src/main/scala/spark/util/BoundedPriorityQueue.scala
index 4bc5db8bb7..0575497f5d 100644
--- a/core/src/main/scala/spark/util/BoundedPriorityQueue.scala
+++ b/core/src/main/scala/spark/util/BoundedPriorityQueue.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import java.io.Serializable
diff --git a/core/src/main/scala/spark/util/ByteBufferInputStream.scala b/core/src/main/scala/spark/util/ByteBufferInputStream.scala
index d7e67497fe..47a28e2f76 100644
--- a/core/src/main/scala/spark/util/ByteBufferInputStream.scala
+++ b/core/src/main/scala/spark/util/ByteBufferInputStream.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import java.io.InputStream
diff --git a/core/src/main/scala/spark/util/CompletionIterator.scala b/core/src/main/scala/spark/util/CompletionIterator.scala
index 8139183780..210450892b 100644
--- a/core/src/main/scala/spark/util/CompletionIterator.scala
+++ b/core/src/main/scala/spark/util/CompletionIterator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 /**
@@ -22,4 +39,4 @@ object CompletionIterator {
       def completion() = completionFunction
     }
   }
-}
-\ No newline at end of file
+}
diff --git a/core/src/main/scala/spark/util/Distribution.scala b/core/src/main/scala/spark/util/Distribution.scala
index 24738b4307..5d4d7a6c50 100644
--- a/core/src/main/scala/spark/util/Distribution.scala
+++ b/core/src/main/scala/spark/util/Distribution.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import java.io.PrintStream
@@ -62,4 +79,4 @@ object Distribution {
     quantiles.foreach{q => out.print(q + "\t")}
     out.println
   }
-}
-\ No newline at end of file
+}
diff --git a/core/src/main/scala/spark/util/IdGenerator.scala b/core/src/main/scala/spark/util/IdGenerator.scala
index b6e309fe1a..3422280559 100644
--- a/core/src/main/scala/spark/util/IdGenerator.scala
+++ b/core/src/main/scala/spark/util/IdGenerator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import java.util.concurrent.atomic.AtomicInteger
diff --git a/core/src/main/scala/spark/util/IntParam.scala b/core/src/main/scala/spark/util/IntParam.scala
index 0427646747..daf0d58fa2 100644
--- a/core/src/main/scala/spark/util/IntParam.scala
+++ b/core/src/main/scala/spark/util/IntParam.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 /**
diff --git a/core/src/main/scala/spark/util/MemoryParam.scala b/core/src/main/scala/spark/util/MemoryParam.scala
index 3726738842..298562323a 100644
--- a/core/src/main/scala/spark/util/MemoryParam.scala
+++ b/core/src/main/scala/spark/util/MemoryParam.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import spark.Utils
diff --git a/core/src/main/scala/spark/util/MetadataCleaner.scala b/core/src/main/scala/spark/util/MetadataCleaner.scala
index dafa906712..92909e0959 100644
--- a/core/src/main/scala/spark/util/MetadataCleaner.scala
+++ b/core/src/main/scala/spark/util/MetadataCleaner.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import java.util.concurrent.{TimeUnit, ScheduledFuture, Executors}
diff --git a/core/src/main/scala/spark/util/NextIterator.scala b/core/src/main/scala/spark/util/NextIterator.scala
index 48b5018ddd..22163ece8d 100644
--- a/core/src/main/scala/spark/util/NextIterator.scala
+++ b/core/src/main/scala/spark/util/NextIterator.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 /** Provides a basic/boilerplate Iterator implementation. */
@@ -68,4 +85,4 @@ private[spark] abstract class NextIterator[U] extends Iterator[U] {
     gotNext = false
     nextValue
   }
-}
-\ No newline at end of file
+}
diff --git a/core/src/main/scala/spark/util/RateLimitedOutputStream.scala b/core/src/main/scala/spark/util/RateLimitedOutputStream.scala
index e3f00ea8c7..00f782bbe7 100644
--- a/core/src/main/scala/spark/util/RateLimitedOutputStream.scala
+++ b/core/src/main/scala/spark/util/RateLimitedOutputStream.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import scala.annotation.tailrec
diff --git a/core/src/main/scala/spark/util/SerializableBuffer.scala b/core/src/main/scala/spark/util/SerializableBuffer.scala
index 09d588fe1c..7e6842628a 100644
--- a/core/src/main/scala/spark/util/SerializableBuffer.scala
+++ b/core/src/main/scala/spark/util/SerializableBuffer.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import java.nio.ByteBuffer
diff --git a/core/src/main/scala/spark/util/StatCounter.scala b/core/src/main/scala/spark/util/StatCounter.scala
index 2b980340b7..76358d4151 100644
--- a/core/src/main/scala/spark/util/StatCounter.scala
+++ b/core/src/main/scala/spark/util/StatCounter.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 /**
diff --git a/core/src/main/scala/spark/util/TimeStampedHashMap.scala b/core/src/main/scala/spark/util/TimeStampedHashMap.scala
index 92dfaa6e6f..cc7909194a 100644
--- a/core/src/main/scala/spark/util/TimeStampedHashMap.scala
+++ b/core/src/main/scala/spark/util/TimeStampedHashMap.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import java.util.concurrent.ConcurrentHashMap
diff --git a/core/src/main/scala/spark/util/TimeStampedHashSet.scala b/core/src/main/scala/spark/util/TimeStampedHashSet.scala
index 5f1cc93752..41e3fd8cba 100644
--- a/core/src/main/scala/spark/util/TimeStampedHashSet.scala
+++ b/core/src/main/scala/spark/util/TimeStampedHashSet.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 import scala.collection.mutable.Set
diff --git a/core/src/main/scala/spark/util/Vector.scala b/core/src/main/scala/spark/util/Vector.scala
index 835822edb2..ed49386f18 100644
--- a/core/src/main/scala/spark/util/Vector.scala
+++ b/core/src/main/scala/spark/util/Vector.scala
@@ -1,3 +1,20 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package spark.util
 
 class Vector(val elements: Array[Double]) extends Serializable {
diff --git a/core/src/main/twirl/spark/common/layout.scala.html b/core/src/main/twirl/spark/common/layout.scala.html
deleted file mode 100644
index b9192060aa..0000000000
--- a/core/src/main/twirl/spark/common/layout.scala.html
+++ /dev/null
@@ -1,35 +0,0 @@
-@(title: String)(content: Html)
-
-<!DOCTYPE html>
-<html>
-
-  <head>
-    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
-    <link rel="stylesheet" href="static/bootstrap.min.css" type="text/css">
-    <link rel="stylesheet" href="static/bootstrap-responsive.min.css" type="text/css">
-    <script src="static/sorttable.js"></script>
-    <title>@title</title>
-    <style type="text/css">
-      table.sortable thead { cursor: pointer; }
-    </style>
-  </head>
-
-  <body>
-    <div class="container">
-    
-      <!-- HEADER -->
-      <div class="row">
-        <div class="span12">
-          <img src="static/spark_logo.png">
-          <h1 style="vertical-align: bottom; margin-bottom: 10px; margin-left: 30px; display: inline-block;"> @title </h1>
-        </div>
-      </div>
-    
-      <hr/>
-      
-      @content
-    
-    </div>
-  </body>
-
-</html>
-\ No newline at end of file
diff --git a/core/src/main/twirl/spark/deploy/master/app_details.scala.html b/core/src/main/twirl/spark/deploy/master/app_details.scala.html
deleted file mode 100644
index 5e5e5de551..0000000000
--- a/core/src/main/twirl/spark/deploy/master/app_details.scala.html
+++ /dev/null
@@ -1,38 +0,0 @@
-@(app: spark.deploy.master.ApplicationInfo)
-
-@spark.common.html.layout(title = "Application Details") {
-      
-  <!-- Application Details -->
-  <div class="row">
-    <div class="span12">
-      <ul class="unstyled">
-        <li><strong>ID:</strong> @app.id</li>
-        <li><strong>Description:</strong> @app.desc.name</li>
-        <li><strong>User:</strong> @app.desc.user</li>
-        <li><strong>Cores:</strong>
-          @if(app.desc.maxCores == Integer.MAX_VALUE) {
-            Unlimited (@app.coresGranted granted)
-          } else {
-            @app.desc.maxCores (@app.coresGranted granted, @app.coresLeft left)
-          }
-        </li>
-        <li><strong>Memory per Slave:</strong> @app.desc.memoryPerSlave</li>
-        <li><strong>Submit Date:</strong> @app.submitDate</li>
-        <li><strong>State:</strong> @app.state</li>
-        <li><strong><a href="@app.appUiUrl">Application Detail UI</a></strong></li>
-      </ul>
-    </div>
-  </div>
-  
-  <hr/>
-  
-  <!-- Executors -->
-  <div class="row">
-    <div class="span12">
-      <h3> Executor Summary </h3>
-      <br/>
-      @executors_table(app.executors.values.toList)
-    </div>
-  </div>
-      
-}
diff --git a/core/src/main/twirl/spark/deploy/master/app_row.scala.html b/core/src/main/twirl/spark/deploy/master/app_row.scala.html
deleted file mode 100644
index feb306f35c..0000000000
--- a/core/src/main/twirl/spark/deploy/master/app_row.scala.html
+++ /dev/null
@@ -1,20 +0,0 @@
-@(app: spark.deploy.master.ApplicationInfo)
-
-@import spark.Utils
-@import spark.deploy.WebUI.formatDate
-@import spark.deploy.WebUI.formatDuration
-
-<tr>
-  <td>
-    <a href="app?appId=@(app.id)">@app.id</a>
-  </td>
-  <td>@app.desc.name</td>
-  <td>
-    @app.coresGranted
-  </td>
-  <td>@Utils.memoryMegabytesToString(app.desc.memoryPerSlave)</td>
-  <td>@formatDate(app.submitDate)</td>
-  <td>@app.desc.user</td>
-  <td>@app.state.toString()</td>
-  <td>@formatDuration(app.duration)</td>
-</tr>
diff --git a/core/src/main/twirl/spark/deploy/master/app_table.scala.html b/core/src/main/twirl/spark/deploy/master/app_table.scala.html
deleted file mode 100644
index f789cee0f1..0000000000
--- a/core/src/main/twirl/spark/deploy/master/app_table.scala.html
+++ /dev/null
@@ -1,21 +0,0 @@
-@(apps: Array[spark.deploy.master.ApplicationInfo])
-
-<table class="table table-bordered table-striped table-condensed sortable">
-  <thead>
-    <tr>
-      <th>ID</th>
-      <th>Description</th>
-      <th>Cores</th>
-      <th>Memory per Node</th>
-      <th>Submit Time</th>
-      <th>User</th>
-      <th>State</th>
-      <th>Duration</th>
-    </tr>
-  </thead>
-  <tbody>
-    @for(j <- apps) {
-      @app_row(j)
-    }
-  </tbody>
-</table>
diff --git a/core/src/main/twirl/spark/deploy/master/executor_row.scala.html b/core/src/main/twirl/spark/deploy/master/executor_row.scala.html
deleted file mode 100644
index 21e72c7aab..0000000000
--- a/core/src/main/twirl/spark/deploy/master/executor_row.scala.html
+++ /dev/null
@@ -1,15 +0,0 @@
-@(executor: spark.deploy.master.ExecutorInfo)
-
-<tr>
-  <td>@executor.id</td>
-  <td>
-    <a href="@executor.worker.webUiAddress">@executor.worker.id</a>
-  </td>
-  <td>@executor.cores</td>
-  <td>@executor.memory</td>
-  <td>@executor.state</td>
-  <td>
-    <a href="@(executor.worker.webUiAddress)/log?appId=@(executor.application.id)&executorId=@(executor.id)&logType=stdout">stdout</a>
-    <a href="@(executor.worker.webUiAddress)/log?appId=@(executor.application.id)&executorId=@(executor.id)&logType=stderr">stderr</a>
-  </td>
-</tr>
diff --git a/core/src/main/twirl/spark/deploy/master/executors_table.scala.html b/core/src/main/twirl/spark/deploy/master/executors_table.scala.html
deleted file mode 100644
index cafc42c80e..0000000000
--- a/core/src/main/twirl/spark/deploy/master/executors_table.scala.html
+++ /dev/null
@@ -1,19 +0,0 @@
-@(executors: List[spark.deploy.master.ExecutorInfo])
-
-<table class="table table-bordered table-striped table-condensed">
-  <thead>
-    <tr>
-      <th>ExecutorID</th>
-      <th>Worker</th>
-      <th>Cores</th>
-      <th>Memory</th>
-      <th>State</th>
-      <th>Logs</th>
-    </tr>
-  </thead>
-  <tbody>
-    @for(e <- executors) {
-      @executor_row(e)
-    }
-  </tbody>
-</table>
-\ No newline at end of file
diff --git a/core/src/main/twirl/spark/deploy/master/index.scala.html b/core/src/main/twirl/spark/deploy/master/index.scala.html
deleted file mode 100644
index b9b9f08810..0000000000
--- a/core/src/main/twirl/spark/deploy/master/index.scala.html
+++ /dev/null
@@ -1,53 +0,0 @@
-@(state: spark.deploy.MasterState)
-@import spark.deploy.master._
-@import spark.Utils
-
-@spark.common.html.layout(title = "Spark Master on " + state.host + ":" + state.port) {
-
-  <!-- Cluster Details -->
-  <div class="row">
-    <div class="span12">
-      <ul class="unstyled">
-        <li><strong>URL:</strong> @(state.uri)</li>
-        <li><strong>Workers:</strong> @state.workers.size </li>
-        <li><strong>Cores:</strong> @{state.workers.map(_.cores).sum} Total,
-                                    @{state.workers.map(_.coresUsed).sum} Used</li>
-        <li><strong>Memory:</strong> @{Utils.memoryMegabytesToString(state.workers.map(_.memory).sum)} Total, 
-                                     @{Utils.memoryMegabytesToString(state.workers.map(_.memoryUsed).sum)} Used</li>
-        <li><strong>Applications:</strong> @state.activeApps.size Running, @state.completedApps.size Completed </li>
-      </ul>
-    </div>
-  </div>
-
-  <!-- Worker Summary -->
-  <div class="row">
-    <div class="span12">
-      <h3> Workers </h3>
-      <br/>
-      @worker_table(state.workers.sortBy(_.id))
-    </div>
-  </div>
-
-  <hr/>
-
-  <!-- App Summary (Running) -->
-  <div class="row">
-    <div class="span12">
-      <h3> Running Applications </h3>
-      <br/>
-      @app_table(state.activeApps.sortBy(_.startTime).reverse)
-    </div>
-  </div>
-
-  <hr/>
-
-  <!-- App Summary (Completed) -->
-  <div class="row">
-    <div class="span12">
-      <h3> Completed Applications </h3>
-      <br/>
-      @app_table(state.completedApps.sortBy(_.endTime).reverse)
-    </div>
-  </div>
-
-}
diff --git a/core/src/main/twirl/spark/deploy/master/worker_row.scala.html b/core/src/main/twirl/spark/deploy/master/worker_row.scala.html
deleted file mode 100644
index 46277ca421..0000000000
--- a/core/src/main/twirl/spark/deploy/master/worker_row.scala.html
+++ /dev/null
@@ -1,14 +0,0 @@
-@(worker: spark.deploy.master.WorkerInfo)
-
-@import spark.Utils
-
-<tr>
-  <td>
-    <a href="@worker.webUiAddress">@worker.id</a>
-  </td>
-  <td>@{worker.host}:@{worker.port}</td>
-  <td>@worker.state</td>
-  <td>@worker.cores (@worker.coresUsed Used)</td>
-  <td>@{Utils.memoryMegabytesToString(worker.memory)}
-     (@{Utils.memoryMegabytesToString(worker.memoryUsed)} Used)</td>
-</tr>
diff --git a/core/src/main/twirl/spark/deploy/master/worker_table.scala.html b/core/src/main/twirl/spark/deploy/master/worker_table.scala.html
deleted file mode 100644
index b249411a62..0000000000
--- a/core/src/main/twirl/spark/deploy/master/worker_table.scala.html
+++ /dev/null
@@ -1,18 +0,0 @@
-@(workers: Array[spark.deploy.master.WorkerInfo])
-
-<table class="table table-bordered table-striped table-condensed sortable">
-  <thead>
-    <tr>
-      <th>ID</th>
-      <th>Address</th>
-      <th>State</th>
-      <th>Cores</th>
-      <th>Memory</th>
-    </tr>
-  </thead>
-  <tbody>
-    @for(w <- workers) {
-      @worker_row(w)
-    }
-  </tbody>
-</table>
diff --git a/core/src/main/twirl/spark/deploy/worker/executor_row.scala.html b/core/src/main/twirl/spark/deploy/worker/executor_row.scala.html
deleted file mode 100644
index dad0a89080..0000000000
--- a/core/src/main/twirl/spark/deploy/worker/executor_row.scala.html
+++ /dev/null
@@ -1,20 +0,0 @@
-@(executor: spark.deploy.worker.ExecutorRunner)
-
-@import spark.Utils
-
-<tr>
-  <td>@executor.execId</td>
-  <td>@executor.cores</td>
-  <td>@Utils.memoryMegabytesToString(executor.memory)</td>
-  <td>
-    <ul class="unstyled">
-      <li><strong>ID:</strong> @executor.appId</li>
-      <li><strong>Name:</strong> @executor.appDesc.name</li>
-      <li><strong>User:</strong> @executor.appDesc.user</li>
-    </ul>
-  </td>
-  <td>
-    <a href="log?appId=@(executor.appId)&executorId=@(executor.execId)&logType=stdout">stdout</a>
-    <a href="log?appId=@(executor.appId)&executorId=@(executor.execId)&logType=stderr">stderr</a>
-  </td>
-</tr>
diff --git a/core/src/main/twirl/spark/deploy/worker/executors_table.scala.html b/core/src/main/twirl/spark/deploy/worker/executors_table.scala.html
deleted file mode 100644
index 327a2399c7..0000000000
--- a/core/src/main/twirl/spark/deploy/worker/executors_table.scala.html
+++ /dev/null
@@ -1,18 +0,0 @@
-@(executors: List[spark.deploy.worker.ExecutorRunner])
-
-<table class="table table-bordered table-striped table-condensed sortable">
-  <thead>
-    <tr>
-      <th>ExecutorID</th>
-      <th>Cores</th>
-      <th>Memory</th>
-      <th>Job Details</th>
-      <th>Logs</th>
-    </tr>
-  </thead>
-  <tbody>
-    @for(e <- executors) {
-      @executor_row(e)
-    }
-  </tbody>
-</table>
-\ No newline at end of file
diff --git a/core/src/main/twirl/spark/deploy/worker/index.scala.html b/core/src/main/twirl/spark/deploy/worker/index.scala.html
deleted file mode 100644
index 0e66af9284..0000000000
--- a/core/src/main/twirl/spark/deploy/worker/index.scala.html
+++ /dev/null
@@ -1,44 +0,0 @@
-@(worker: spark.deploy.WorkerState)
-@import spark.Utils
-
-@spark.common.html.layout(title = "Spark Worker on " + worker.host + ":" + worker.port) {
-
-  <!-- Worker Details -->
-  <div class="row">
-    <div class="span12">
-      <ul class="unstyled">
-        <li><strong>ID:</strong> @worker.workerId</li>
-        <li><strong>
-          Master URL:</strong> @worker.masterUrl 
-        </li>
-        <li><strong>Cores:</strong> @worker.cores (@worker.coresUsed Used)</li>
-        <li><strong>Memory:</strong> @{Utils.memoryMegabytesToString(worker.memory)}
-          (@{Utils.memoryMegabytesToString(worker.memoryUsed)} Used)</li>
-      </ul>
-      <p><a href="@worker.masterWebUiUrl">Back to Master</a></p>
-    </div>
-  </div>
-
-  <hr/>
-
-  <!-- Running Executors -->
-  <div class="row">
-    <div class="span12">
-      <h3> Running Executors </h3>
-      <br/>
-      @executors_table(worker.executors)
-    </div>
-  </div>
-
-  <hr/>
-
-  <!-- Finished Executors  -->
-  <div class="row">
-    <div class="span12">
-      <h3> Finished Executors </h3>
-      <br/>
-      @executors_table(worker.finishedExecutors)
-    </div>
-  </div>
-      
-}
diff --git a/core/src/main/twirl/spark/storage/index.scala.html b/core/src/main/twirl/spark/storage/index.scala.html
deleted file mode 100644
index 2b337f6133..0000000000
--- a/core/src/main/twirl/spark/storage/index.scala.html
+++ /dev/null
@@ -1,40 +0,0 @@
-@(maxMem: Long, remainingMem: Long, diskSpaceUsed: Long, rdds: Array[spark.storage.RDDInfo], storageStatusList: Array[spark.storage.StorageStatus])
-@import spark.Utils
-
-@spark.common.html.layout(title = "Storage Dashboard") {
-  
-  <!-- High-Level Information -->
-  <div class="row">
-    <div class="span12">
-      <ul class="unstyled">
-        <li><strong>Memory:</strong> 
-          @{Utils.memoryBytesToString(maxMem - remainingMem)} Used 
-          (@{Utils.memoryBytesToString(remainingMem)} Available) </li>
-        <li><strong>Disk:</strong> @{Utils.memoryBytesToString(diskSpaceUsed)} Used </li>
-      </ul>
-    </div>
-  </div>
-
-  <hr/>
-
-  <!-- RDD Summary -->
-  <div class="row">
-    <div class="span12">
-      <h3> RDD Summary </h3>
-      <br/>
-       @rdd_table(rdds)
-    </div>
-  </div>
-
-  <hr/>
-
-  <!-- Worker Summary -->
-  <div class="row">
-    <div class="span12">
-      <h3> Worker Summary </h3>
-      <br/>
-       @worker_table(storageStatusList)
-    </div>
-  </div>
-
-}
-\ No newline at end of file
diff --git a/core/src/main/twirl/spark/storage/rdd.scala.html b/core/src/main/twirl/spark/storage/rdd.scala.html
deleted file mode 100644
index d85addeb17..0000000000
--- a/core/src/main/twirl/spark/storage/rdd.scala.html
+++ /dev/null
@@ -1,81 +0,0 @@
-@(rddInfo: spark.storage.RDDInfo, storageStatusList: Array[spark.storage.StorageStatus])
-@import spark.Utils
-
-@spark.common.html.layout(title = "RDD Info ") {
-  
-  <!-- High-Level Information -->
-  <div class="row">
-    <div class="span12">
-      <ul class="unstyled">
-        <li>
-          <strong>Storage Level:</strong> 
-          @(rddInfo.storageLevel.description)
-        <li>
-          <strong>Cached Partitions:</strong>
-          @(rddInfo.numCachedPartitions)
-        </li>
-        <li>
-          <strong>Total Partitions:</strong>
-          @(rddInfo.numPartitions)
-        </li>
-        <li>
-          <strong>Memory Size:</strong>
-          @{Utils.memoryBytesToString(rddInfo.memSize)}
-        </li>
-        <li>
-          <strong>Disk Size:</strong>
-          @{Utils.memoryBytesToString(rddInfo.diskSize)}
-        </li>
-      </ul>
-    </div>
-  </div>
-
-  <hr/>
-
-  <!-- RDD Summary -->
-  <div class="row">
-    <div class="span12">
-      <h3> RDD Summary </h3>
-      <br/>
-      
-
-      <!-- Block Table Summary -->
-      <table class="table table-bordered table-striped table-condensed sortable">
-        <thead>
-          <tr>
-            <th>Block Name</th>
-            <th>Storage Level</th>
-            <th>Size in Memory</th>
-            <th>Size on Disk</th>
-          </tr>
-        </thead>
-        <tbody>
-          @storageStatusList.flatMap(_.blocks).toArray.sortWith(_._1 < _._1).map { case (k,v) => 
-            <tr>
-              <td>@k</td>
-              <td>
-                 @(v.storageLevel.description)
-              </td>
-              <td>@{Utils.memoryBytesToString(v.memSize)}</td>
-              <td>@{Utils.memoryBytesToString(v.diskSize)}</td>
-            </tr>
-          }
-        </tbody>
-      </table>
-
-
-    </div>
-  </div>
-
-  <hr/>
-
-  <!-- Worker Table -->
-  <div class="row">
-    <div class="span12">
-      <h3> Worker Summary </h3>
-      <br/>
-       @worker_table(storageStatusList, "rdd_" + rddInfo.id )
-    </div>
-  </div>
-
-}
-\ No newline at end of file
diff --git a/core/src/main/twirl/spark/storage/rdd_table.scala.html b/core/src/main/twirl/spark/storage/rdd_table.scala.html
deleted file mode 100644
index a51e64aed0..0000000000
--- a/core/src/main/twirl/spark/storage/rdd_table.scala.html
+++ /dev/null
@@ -1,32 +0,0 @@
-@(rdds: Array[spark.storage.RDDInfo])
-@import spark.Utils
-
-<table class="table table-bordered table-striped table-condensed sortable">
-  <thead>
-    <tr>
-      <th>RDD Name</th>
-      <th>Storage Level</th>
-      <th>Cached Partitions</th>
-      <th>Fraction Partitions Cached</th>
-      <th>Size in Memory</th>
-      <th>Size on Disk</th>
-    </tr>
-  </thead>
-  <tbody>
-    @for(rdd <- rdds) {
-      <tr>
-        <td>
-          <a href="rdd?id=@(rdd.id)">
-            @rdd.name
-          </a>
-        </td>
-        <td>@(rdd.storageLevel.description)
-        </td>
-        <td>@rdd.numCachedPartitions</td>
-        <td>@(rdd.numCachedPartitions / rdd.numPartitions.toDouble)</td>
-        <td>@{Utils.memoryBytesToString(rdd.memSize)}</td>
-        <td>@{Utils.memoryBytesToString(rdd.diskSize)}</td>
-      </tr>
-    }
-  </tbody>
-</table>
-\ No newline at end of file
diff --git a/core/src/main/twirl/spark/storage/worker_table.scala.html b/core/src/main/twirl/spark/storage/worker_table.scala.html
deleted file mode 100644
index cd72a688c1..0000000000
--- a/core/src/main/twirl/spark/storage/worker_table.scala.html
+++ /dev/null
@@ -1,24 +0,0 @@
-@(workersStatusList: Array[spark.storage.StorageStatus], prefix: String = "")
-@import spark.Utils
-
-<table class="table table-bordered table-striped table-condensed sortable">
-  <thead>
-    <tr>
-      <th>Host</th>
-      <th>Memory Usage</th>
-      <th>Disk Usage</th>
-    </tr>
-  </thead>
-  <tbody>
-    @for(status <- workersStatusList) {
-      <tr>
-        <td>@(status.blockManagerId.host + ":" + status.blockManagerId.port)</td>
-        <td>
-          @(Utils.memoryBytesToString(status.memUsed(prefix)))
-          (@(Utils.memoryBytesToString(status.memRemaining)) Total Available)
-        </td>
-        <td>@(Utils.memoryBytesToString(status.diskUsed(prefix)))</td>
-    </tr>
-    }
-  </tbody>
-</table>
-\ No newline at end of file