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https://issues.apache.org/jira/browse/YARN-7814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16339234#comment-16339234
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Shane Kumpf commented on YARN-7814:
-----------------------------------
Thanks [~miklos.szeg...@cloudera.com]. I have cleaned up the other JIRAs.
I attached a patch that removes the automatic mounting. I'm not finding any
tests that check for its presence, so no tests added or removed.
While it is not currently in use, I did leave the code related to
{{CgroupsHandler#getCGroupMounthPath}} as it seems that could have value
elsewhere. It was added to get rid of the findbugs warning regarding the
hardcoded /sys/fs/cgroup path. If others feel it should just be removed, I can
do so.
> Remove automatic mounting of the cgroups root directory into Docker containers
> ------------------------------------------------------------------------------
>
> Key: YARN-7814
> URL: https://issues.apache.org/jira/browse/YARN-7814
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Shane Kumpf
> Assignee: Shane Kumpf
> Priority: Major
> Attachments: YARN-7814.001.patch
>
>
> Currently, all Docker containers launched by {{DockerLinuxContainerRuntime}}
> get /sys/fs/cgroup automatically mounted. Now that user supplied mounts
> (YARN-5534) are in, containers that require this mount can request it (with a
> properly configured mount whitelist).
> I propose we remove the automatic mounting of /sys/fs/cgroup into Docker
> containers.
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