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https://issues.apache.org/jira/browse/YARN-6757?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Miklos Szegedi updated YARN-6757:
---------------------------------
Attachment: YARN-6757.003.patch
> Refactor the usage of
> yarn.nodemanager.linux-container-executor.cgroups.mount-path
> ----------------------------------------------------------------------------------
>
> Key: YARN-6757
> URL: https://issues.apache.org/jira/browse/YARN-6757
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 3.0.0-alpha4
> Reporter: Miklos Szegedi
> Assignee: Miklos Szegedi
> Priority: Minor
> Attachments: YARN-6757.000.patch, YARN-6757.001.patch,
> YARN-6757.002.patch, YARN-6757.003.patch
>
>
> We should add the ability to specify a custom cgroup path. This is how the
> documentation of {{linux-container-executor.cgroups.mount-path}} would look
> like:
> {noformat}
> Requested cgroup mount path. Yarn has built in functionality to discover
> the system cgroup mount paths, so use this setting only, if the discovery
> does not work.
> This path must exist before the NodeManager is launched.
> The location can vary depending on the Linux distribution in use.
> Common locations include /sys/fs/cgroup and /cgroup.
> If cgroups are not mounted, set
> yarn.nodemanager.linux-container-executor.cgroups.mount
> to true. In this case it specifies, where the LCE should attempt to mount
> cgroups if not found.
> If cgroups is accessible through lxcfs or some other file system,
> then set this path and
> yarn.nodemanager.linux-container-executor.cgroups.mount to false.
> Yarn tries to use this path first, before any cgroup mount point
> discovery.
> If it cannot find this directory, it falls back to searching for cgroup
> mount points in the system.
> Only used when the LCE resources handler is set to the
> CgroupsLCEResourcesHandler
> {noformat}
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