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https://issues.apache.org/jira/browse/MAPREDUCE-3537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13168161#comment-13168161
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Mahadev konar commented on MAPREDUCE-3537:
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+1 the patch looks good.
> DefaultContainerExecutor has a race condn. with multiple concurrent containers
> ------------------------------------------------------------------------------
>
> Key: MAPREDUCE-3537
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3537
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.23.0
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Priority: Blocker
> Attachments: MAPREDUCE-3537.patch
>
>
> DCE relies cwd before calling ContainerLocalizer.runLocalization. However,
> with multiple containers setting cwd on same localFS reference leads to race.
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