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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4330) TaskAttemptCompletedEventTransition invalidates previously successful attempt without checking if the newly completed attempt is successful
Date Fri, 08 Jun 2012 18:06:25 GMT
Bikas Saha created MAPREDUCE-4330:
-------------------------------------

             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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