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https://issues.apache.org/jira/browse/MAPREDUCE-322?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-322.
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Resolution: Fixed
This has been fixed with both cgroups and task level niceness.
> TaskTracker shuold run user tasks nicely in the local machine
> -------------------------------------------------------------
>
> Key: MAPREDUCE-322
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-322
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Tsz Wo Nicholas Sze
>
> If one task tried to use all CPUs in a local machine, all other tasks or
> processes (includes tasktracker and datanode daemons) may hardly get a chance
> to run.
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