[jira] [Updated] (MAPREDUCE-3858) Task attempt failure during commit results in task never completing

["Tom White (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3858?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tom White updated MAPREDUCE-3858:
---------------------------------

    Attachment: MAPREDUCE-3858.patch

Here's a patch which clears the TaskImpl.commitAttempt instance variable on task attempt failure.
                
> Task attempt failure during commit results in task never completing
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3858
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3858
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Tom White
>            Assignee: Tom White
>            Priority: Critical
>         Attachments: MAPREDUCE-3858.patch
>
>
> On a terasort job a task attempt failed during the commit phase. Another attempt was rescheduled, but when it tried to commit it failed.
> {noformat}
> attempt_1329019187148_0083_r_000586_0 already given a go for committing the task output, so killing attempt_1329019187148_0083_r_000586_1
> {noformat}
> The job hung as new attempts kept getting scheduled only to fail during commit.

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