[GitHub] srowen commented on a change in pull request #23927: [SPARK-23433][CORE] avoid more than one active task set managers for a stage

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srowen commented on a change in pull request #23927: [SPARK-23433][CORE] avoid more than one active task set managers for a stage
URL: https://github.com/apache/spark/pull/23927#discussion_r261689551
 
 

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 File path: core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala
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 @@ -123,7 +123,7 @@ private[spark] class TaskSetManager(
   // state until all tasks have finished running; we keep TaskSetManagers that are in the zombie
   // state in order to continue to track and account for the running tasks.
   // TODO: We should kill any running task attempts when the task set manager becomes a zombie.
-  private[scheduler] var isZombie = false
+  @transient private[scheduler] var isZombie = false
 
 Review comment:
   This is transient because ... if it's true then that fact shouldn't survive serialization?
   Just wondering if volatile was what was meant.

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