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Date: Mon, 1 Jun 2015 21:37:18 +0000 (UTC)
From: "Sidharta Seethana (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12723200.1403553318000.87205.1433194638953@Atlassian.JIRA>
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 <JIRA.12723200.1403553318325@arcas>
Subject: [jira] [Commented] (YARN-2194) Cgroups cease to work in RHEL7
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    [ https://issues.apache.org/jira/browse/YARN-2194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568063#comment-14568063 ] 

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

Isn't it better to use a different separator that is less likely to be in use ( e.g ':' or '|' instead of ',' ) when invoking container-executor ? Granted that this is a (slightly) bigger change, but it seems like the right thing to do. 

> 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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