Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/5964#discussion_r29823934
--- Diff: core/src/main/scala/org/apache/spark/scheduler/DAGScheduler.scala
---
@@ -1103,9 +1103,14 @@ class DAGScheduler(
// multiple tasks running concurrently on different executors). In
that case, it is possible
// the fetch failure has already been handled by the scheduler.
if (runningStages.contains(failedStage)) {
- logInfo(s"Marking $failedStage (${failedStage.name}) as failed "
+
- s"due to a fetch failure from $mapStage (${mapStage.name})")
- markStageAsFinished(failedStage, Some(failureMessage))
+ if (failedStage.attemptId - 1 > task.stageAttemptId) {
--- End diff --
this is really the only important part of the fix -- if we get a fetch
failure, but we've already failed the attempt of the stage that caused the
fetch failure, then do *not* resubmit the stage again. (The rest of the
changes are just adding the stageAttemptId to the task)
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