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From "Wei Yan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2194) Cgroups cease to work in RHEL7
Date Tue, 02 Jun 2015 17:02:51 GMT

    [ https://issues.apache.org/jira/browse/YARN-2194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14569421#comment-14569421
] 

Wei Yan commented on YARN-2194:
-------------------------------

[~sidharta-s], thanks for the advice. Use a different separator LGTM. In that way, we can
trust the "cpu" controller, and can also help avoid doing OS-specific changes.
Comments? [~kasha], [~vinodkv], [~mjacobs].

And for the new CGroupsHandlerImpl, didn't find any problem when I checked the patch. [~vvasudev],
please correct me if I missed anything. 


> Cgroups cease to work in RHEL7
> ------------------------------
>
>                 Key: YARN-2194
>                 URL: https://issues.apache.org/jira/browse/YARN-2194
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 2.7.0
>            Reporter: Wei Yan
>            Assignee: Wei Yan
>            Priority: Critical
>         Attachments: YARN-2194-1.patch, YARN-2194-2.patch, YARN-2194-3.patch
>
>
> In RHEL7, the CPU controller is named "cpu,cpuacct". The comma in the controller name
leads to container launch failure. 
> RHEL7 deprecates libcgroup and recommends the user of systemd. However, systemd has certain
shortcomings as identified in this JIRA (see comments). 
> This JIRA only fixes the failure, and doesn't try to use systemd.



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