Bikas Saha created MAPREDUCE-4330:
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Summary: TaskAttemptCompletedEventTransition invalidates
previously successful attempt without checking if the newly completed attempt
is successful
Key: MAPREDUCE-4330
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4330
Project: Hadoop Map/Reduce
Issue Type: Bug
Reporter: Bikas Saha
Assignee: Bikas Saha
The previously completed attempt is removed from
successAttemptCompletionEventNoMap and marked OBSOLETE.
After that, if the newly completed attempt is successful then it is added to
the successAttemptCompletionEventNoMap.
This seems wrong because the newly completed attempt could be failed and thus
there is no need to invalidate the successful attempt.
One error case would be when a speculative attempt completes with killed/failed
after the successful version has completed.
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