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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-6757) Refactor the usage of yarn.nodemanager.linux-container-executor.cgroups.mount-path
Date Wed, 05 Jul 2017 19:59:00 GMT

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

Daniel Templeton updated YARN-6757:
-----------------------------------
    Description: 
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:
{code}
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
{code}


  was:
We should add the ability to specify a custom cgroup path. This is how the documentation of
inux-container-executor.cgroups.mount-path would look like:
{code}
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
{code}



> 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
>
>
> 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:
> {code}
> 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
> {code}



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