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https://issues.apache.org/jira/browse/MAPREDUCE-2129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13081570#comment-13081570
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Subroto Sanyal commented on MAPREDUCE-2129:
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Missed to mention one point:
the number of reducer doesn't impact the issue.
In my test environment, the Job had 2 Reducers.
> Job may hang if mapreduce.job.committer.setup.cleanup.needed=false and
> mapreduce.map/reduce.failures.maxpercent>0
> -----------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-2129
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2129
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Affects Versions: 0.20.1, 0.20.2, 0.20.3, 0.21.0, 0.21.1, 0.22.0
> Reporter: Kang Xiao
> Labels: hadoop
> Attachments: MAPREDUCE-2129.patch, MAPREDUCE-2129.patch
>
>
> Job may hang at RUNNING state if
> mapreduce.job.committer.setup.cleanup.needed=false and
> mapreduce.map/reduce.failures.maxpercent>0. It happens when some tasks fail
> but havent reached failures.maxpercent.
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