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From "Thomas Graves (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-443) allow OS scheduling priority of NM to be different than the containers it launches
Date Wed, 06 Mar 2013 20:24:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13595063#comment-13595063
] 

Thomas Graves commented on YARN-443:
------------------------------------

Bikas, where is the windows container executor?  I looked in the branch-trunk-win but didn't
see it.

I'm ok with moving it up to yarn-site.  I see some benefit for cross platforms, but I think
it also makes it more complex.  I'll make a config something like yarn.nodemanager.container-executor.sched.priority
of type int. I'm going to change it to see if I can call nice from the java containerexecutor
code as it builds up the command rather then inside the container-executor.c code.
                
> 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.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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