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https://issues.apache.org/jira/browse/YARN-2194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568005#comment-14568005
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Matthew Jacobs commented on YARN-2194:
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While this may work for the default RHEL7 configuration, this will break if
someone happens to have mounted the same controllers to
"/sys/fs/cgroup/cpuacct,cpu", or if the user mounted other controllers at the
same path as well. What do you think about creating the symlink from
"/sys/fs/cgroup/cpu" to the mounted path for cpu in all cases (unless it was
actually mounted at /sys/fs/cgroup/cpu of course).
> 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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