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From "Shane Kumpf (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 12:57:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6729?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16668663#comment-16668663
] 

Shane Kumpf commented on YARN-6729:
-----------------------------------

Thanks, [~tangzhankun]! I'm good with that approach. I'll commit this shortly unless there
are other comments.
{quote}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".
{quote}
Enabling CgroupsLCEResourcesHandler follows the same code path, so I don't have much concern.
We can discuss the annotations and removal of the deprecated code as part of YARN-8924.

> 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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