Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/11996#discussion_r58110175
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/TaskSetManager.scala ---
@@ -620,6 +620,14 @@ private[spark] class TaskSetManager(
// Note: "result.value()" only deserializes the value when it's called
at the first time, so
// here "result.value()" just returns the value and won't block other
threads.
sched.dagScheduler.taskEnded(tasks(index), Success, result.value(),
result.accumUpdates, info)
+ // Kill other task attempts if any as the one attempt succeeded
+ for (attemptInfo <- taskAttempts(index) if attemptInfo.attemptNumber
!= info.attemptNumber
--- End diff --
it would be nice if we could add unit test for this in TaskSetManagerSuite
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