Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/15505#discussion_r103554226
--- 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 --
master -> driver
worker -> executor
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