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https://issues.apache.org/jira/browse/MAPREDUCE-1666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12852558#action_12852558
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Arun C Murthy commented on MAPREDUCE-1666:
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Why doesn't '-output' switch (-Dmapred.output.dir) suffice then?
> job output chroot support
> -------------------------
>
> Key: MAPREDUCE-1666
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1666
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: job submission
> Affects Versions: 0.20.2
> Reporter: Allen Wittenauer
> Priority: Minor
>
> It would be useful to be able to submit the same job and have it chroot the
> output to a different base directory before execution. This would allow for
> input to be the same, but output different for the same job over multiple
> runs (potentially by different users).
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