1 files changed, 30 insertions, 0 deletions
diff --git a/core/src/main/scala/org/apache/spark/rdd/MappedRDD.scala b/core/src/main/scala/org/apache/spark/rdd/MappedRDD.scala
new file mode 100644
index 0000000000..26d4806edb
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+++ b/core/src/main/scala/org/apache/spark/rdd/MappedRDD.scala
@@ -0,0 +1,30 @@
+/*
+ * 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.rdd
+
+import org.apache.spark.{RDD, Partition, TaskContext}
+
+private[spark]
+class MappedRDD[U: ClassManifest, T: ClassManifest](prev: RDD[T], f: T => U)
+  extends RDD[U](prev) {
+
+  override def getPartitions: Array[Partition] = firstParent[T].partitions
+
+  override def compute(split: Partition, context: TaskContext) =
+    firstParent[T].iterator(split, context).map(f)
+}