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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4330) TaskAttemptCompletedEventTransition invalidates previously successful attempt without checking if the newly completed attempt is successful
Date Mon, 18 Mar 2013 22:15:18 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bikas Saha updated MAPREDUCE-4330:
----------------------------------

    Assignee: omkar vinit joshi  (was: Bikas Saha)
    
> 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: omkar vinit joshi
>
> 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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