Karthik Kambatla commented on YARN-2194:

RHEL7 recommends using systemd, but doesn't require us to do so. As Wei said, 
we thought it might be better to fix the immediate issue (which Wei claims is a 
simple fix) instead of switching over to use systemd. We could follow-up with a 
fix that uses systemd.

> Add Cgroup support for RedHat 7
> -------------------------------
>                 Key: YARN-2194
>                 URL: https://issues.apache.org/jira/browse/YARN-2194
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Wei Yan
>            Assignee: Wei Yan
>         Attachments: YARN-2194-1.patch
>    In previous versions of RedHat, we can build custom cgroup hierarchies 
> with use of the cgconfig command from the libcgroup package. From RedHat 7, 
> package libcgroup is deprecated and it is not recommended to use it since it 
> can easily create conflicts with the default cgroup hierarchy. The systemd is 
> provided and recommended for cgroup management. We need to add support for 
> this.

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