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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-443) allow OS scheduling priority of NM to be different than the containers it launches
Date Thu, 07 Mar 2013 22:58:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13596514#comment-13596514

Bikas Saha commented on YARN-443:

+1 looks good to me subject to above LCE caveat :P

Minor nits
Did you intend to keep this log message?
+      logOutput(e.getMessage());

You mean "than"
+   * On Linux, higher values mean run the containers at a less 
+   * favorable priority then the NM. 
> allow OS scheduling priority of NM to be different than the containers it launches
> ----------------------------------------------------------------------------------
>                 Key: YARN-443
>                 URL: https://issues.apache.org/jira/browse/YARN-443
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager
>    Affects Versions: 2.0.3-alpha, 0.23.6
>            Reporter: Thomas Graves
>            Assignee: Thomas Graves
>         Attachments: YARN-443-branch-0.23.patch, YARN-443-branch-0.23.patch, YARN-443-branch-0.23.patch,
YARN-443-branch-0.23.patch, YARN-443-branch-2.patch, YARN-443-branch-2.patch, YARN-443-branch-2.patch,
YARN-443.patch, YARN-443.patch, YARN-443.patch, YARN-443.patch, YARN-443.patch, YARN-443.patch,
> It would be nice if we could have the nodemanager run at a different OS scheduling priority
than the containers so that you can still communicate with the nodemanager if the containers
out of control.  
> On linux we could launch the nodemanager at a higher priority, but then all the containers
it launches would also be at that higher priority, so we need a way for the container executor
to launch them at a lower priority.
> I'm not sure how this applies to windows if at all.

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