1 files changed, 41 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/TaskContext.scala b/core/src/main/scala/org/apache/spark/TaskContext.scala
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+++ b/core/src/main/scala/org/apache/spark/TaskContext.scala
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+/*
+ * 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.spark
+
+import executor.TaskMetrics
+import scala.collection.mutable.ArrayBuffer
+
+class TaskContext(
+  val stageId: Int,
+  val splitId: Int,
+  val attemptId: Long,
+  val taskMetrics: TaskMetrics = TaskMetrics.empty()
+) extends Serializable {
+
+  @transient val onCompleteCallbacks = new ArrayBuffer[() => Unit]
+
+  // Add a callback function to be executed on task completion. An example use
+  // is for HadoopRDD to register a callback to close the input stream.
+  def addOnCompleteCallback(f: () => Unit) {
+    onCompleteCallbacks += f
+  }
+
+  def executeOnCompleteCallbacks() {
+    onCompleteCallbacks.foreach{_()}
+  }
+}