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From "Sidharta Seethana (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2194) Cgroups cease to work in RHEL7
Date Tue, 02 Jun 2015 15:59:40 GMT

    [ https://issues.apache.org/jira/browse/YARN-2194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14569329#comment-14569329
] 

Sidharta Seethana commented on YARN-2194:
-----------------------------------------

To clarify, my comment was respect to this line in the description {{The comma in the controller
name leads to container launch failure.}} . I believe switching separators or encoding arguments
in some way is a better approach than requiring symlinks or transform "cpu,cpuacct" to "cpu"
as the controller name. 

> 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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