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Diffstat (limited to 'core/src/main/scala/org/apache/spark/TaskContext.scala')
-rw-r--r-- | core/src/main/scala/org/apache/spark/TaskContext.scala | 41 |
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 new file mode 100644 index 0000000000..b2dd668330 --- /dev/null +++ b/core/src/main/scala/org/apache/spark/TaskContext.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 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{_()} + } +} |