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https://issues.apache.org/jira/browse/MAPREDUCE-2206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990360#comment-12990360
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Scott Chen commented on MAPREDUCE-2206:
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test-patch
{code}

     [exec] BUILD SUCCESSFUL
     [exec] Total time: 2 minutes 2 seconds
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     [exec] +1 overall.
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     [exec]     +1 @author.  The patch does not contain any @author tags.
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     [exec]     +1 tests included.  The patch appears to include 3 new or 
modified tests.
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     [exec]     +1 javadoc.  The javadoc tool did not generate any warning 
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     [exec]     +1 javac.  The applied patch does not increase the total number 
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     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs 
(version 1.3.9) warnings.
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     [exec]     +1 release audit.  The applied patch does not increase the 
total number of release audit warnings.
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     [exec]     +1 system test framework.  The patch passed system test 
framework compile.
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======================================================================
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     [exec]     Finished build.
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{code}

> The task-cleanup tasks should be optional
> -----------------------------------------
>
>                 Key: MAPREDUCE-2206
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2206
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobtracker
>    Affects Versions: 0.23.0
>            Reporter: Scott Chen
>            Assignee: Scott Chen
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2206.txt
>
>
> For job does not use OutputCommitter.abort(), this should be able to turn off.
> This improves the latency of the job because failed tasks are often the 
> bottleneck of the jobs.

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