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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-4058) adjustable task priority
Date Thu, 17 Jul 2014 15:07:06 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer resolved MAPREDUCE-4058.
-----------------------------------------

    Resolution: Won't Fix

Y! was able to get a different patch into 0.23 and 2.x that provides similar (if limited)
capability.

> adjustable task priority
> ------------------------
>
>                 Key: MAPREDUCE-4058
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4058
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: task-controller
>    Affects Versions: 1.0.0
>            Reporter: Allen Wittenauer
>            Assignee: Mark Wagner
>         Attachments: MAPREDUCE-4058-branch-1.0.patch
>
>
> For those of us that completely destroy our CPUs, it is beneficial to be able to run
user tasks at a different priority than the tasktracker. This would allow for TTs (and by
extension, DNs) to get more CPU clock cycles so that things like heartbeats don't disappear.



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