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https://issues.apache.org/jira/browse/MAPREDUCE-2981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13102185#comment-13102185
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Matei Zaharia commented on MAPREDUCE-2981:
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I've attached a first cut at a patch. It passes the unit tests (modulo an issue
that may be related to UserGroupInformation on OS X in
TestFairSchedulerSystem), but it hasn't been tested on a cluster.
> Backport trunk fairscheduler to 0.20-security branch
> ----------------------------------------------------
>
> Key: MAPREDUCE-2981
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2981
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: contrib/fair-share
> Reporter: Matei Zaharia
> Assignee: Matei Zaharia
> Fix For: 0.20.205.0
>
> Attachments: fairsched-backport.patch
>
>
> A lot of improvements have been made to the fair scheduler in 0.21, 0.22 and
> trunk, but have not been ported back to the new 0.20.20X releases that are
> currently considered the stable branch of Hadoop.
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