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Date: Fri, 28 Jul 2017 21:31:00 +0000 (UTC)
From: "Miklos Szegedi (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.13083898.1498850815000.41271.1501277460228@Atlassian.JIRA>
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References: <JIRA.13083898.1498850815000@Atlassian.JIRA> <JIRA.13083898.1498850815221@jira-lw-us.apache.org>
Subject: [jira] [Updated] (YARN-6757) Refactor the usage of
 yarn.nodemanager.linux-container-executor.cgroups.mount-path
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archived-at: Fri, 28 Jul 2017 21:31:05 -0000


     [ https://issues.apache.org/jira/browse/YARN-6757?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

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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