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From "Zhankun Tang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6729) NM percentage-physical-cpu-limit should be always 100 if DefaultLCEResourcesHandler is used
Date Tue, 30 Oct 2018 02:57:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16668053#comment-16668053
] 

Zhankun Tang commented on YARN-6729:
------------------------------------

[~shanekumpf@gmail.com] , Thanks for the review. Yeah. I agree that we need a rework on this
document to deliver a better structured one-stop document about Cgroups in YARN and LCE. 

One thing in my mind is that once we put "yarn.nodemanager.resource.cpu.enabled" into the
document. Does it mean that these features are stable? Because you know, for the historical
reason, that settings are marked "unstable".

I agree that we open another Jira for the document and code cleanup. And I guess YARN-8924
is suitable for this rework after change some title/description.

And for this legacy document, I think we can merge the patch to avoid more confusing before
we release the rework of document?

 

> NM percentage-physical-cpu-limit should be always 100 if DefaultLCEResourcesHandler is
used
> -------------------------------------------------------------------------------------------
>
>                 Key: YARN-6729
>                 URL: https://issues.apache.org/jira/browse/YARN-6729
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>            Reporter: Yufei Gu
>            Assignee: Zhankun Tang
>            Priority: Major
>         Attachments: YARN-6729-trunk.001.patch
>
>
> NM percentage-physical-cpu-limit is not honored in DefaultLCEResourcesHandler, which
may cause container cpu usage calculation issue. e.g. container vcore usage is potentially
more than 100% if percentage-physical-cpu-limit is set to a value less than 100. 



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