[
https://issues.apache.org/jira/browse/YARN-443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13596169#comment-13596169
]
Thomas Graves commented on YARN-443:
------------------------------------
Thanks for the review Bikas, I'll remove the bits for modifying the windows
stuff and update based on your comments. I agree, I wish it was more common
but didn't want to take that on here.
I can update the comment to say higher values mean less favorable priority on
Linux. We could make that the standard if windows wants to handle converting
that. I changed the name to be the adjustment, one because it fit as parameter
to nice but also in an attempt to make it less platform specific. I was hoping
it would allows us to say things like positive numbers in adjustment on any
platform make the container run less favorable to NM and then each platform
could interpret that. We don't have to state that now though.
It doesn't necessarily have to be +ve either. If you nodemanager has root
priveleges it can be negative on linux although I don't know of anyone who
would do that. I also didn't want to restrict that for other platforms.
> 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-2.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.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
