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https://issues.apache.org/jira/browse/YARN-6433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15955748#comment-15955748
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Miklos Szegedi commented on YARN-6433:
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Thank you, [~haibochen] for the review.
> Only accessible cgroup mount directories should be selected for a controller
> ----------------------------------------------------------------------------
>
> Key: YARN-6433
> URL: https://issues.apache.org/jira/browse/YARN-6433
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 3.0.0-alpha3
> Reporter: Miklos Szegedi
> Assignee: Miklos Szegedi
> Attachments: YARN-6433.000.patch
>
>
> I have a Ubuntu16 box that returns the following error with pre-mounted
> cgroups on the latest trunk:
> {code}
> 2017-04-03 19:42:18,511 WARN
> org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.CGroupsHandlerImpl:
> Cgroups not accessible /run/lxcfs/controllers/cpu,cpuacct
> {code}
> The version is:
> {code}
> $ uname -a
> Linux mybox 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016
> x86_64 x86_64 x86_64 GNU/Linux
> {code}
> The following cpu cgroup filesystems are mounted:
> {code}
> $ grep cpuacct /etc/mtab
> cgroup /sys/fs/cgroup/cpu,cpuacct cgroup
> rw,nosuid,nodev,noexec,relatime,cpu,cpuacct,nsroot=/ 0 0
> cpu,cpuacct /run/lxcfs/controllers/cpu,cpuacct cgroup
> rw,relatime,cpu,cpuacct,nsroot=/ 0 0
> {code}
> /sys/fs/cgroup is accessible to my yarn user, so it should be selected
> instead of /run/lxcfs/controllers
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