Github user witgo commented on a diff in the pull request: https://github.com/apache/spark/pull/15505#discussion_r103631249 --- Diff: core/src/main/scala/org/apache/spark/scheduler/TaskDescription.scala --- @@ -52,8 +55,26 @@ private[spark] class TaskDescription( val addedFiles: Map[String, Long], val addedJars: Map[String, Long], val properties: Properties, - val serializedTask: ByteBuffer) { - + // Task object corresponding to the TaskDescription. This is only defined on the master; on + // the worker, the Task object is handled separately from the TaskDescription so that it can + // deserialized after the TaskDescription is deserialized. + @transient private val task: Task[_] = null) extends Logging { + + /** + * Serializes the task for this TaskDescription and returns the serialized task. + * + * This method should only be used on the master (to serialize a task to send to a worker). --- End diff -- Done
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