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Posted to yarn-issues@hadoop.apache.org by "Miklos Szegedi (JIRA)" <ji...@apache.org> on 2016/12/05 18:25:58 UTC
[jira] [Updated] (YARN-5849) Automatically create YARN control
group for pre-mounted cgroups
[ https://issues.apache.org/jira/browse/YARN-5849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Miklos Szegedi updated YARN-5849:
---------------------------------
Attachment: YARN-5849.007.patch
Indeed. Thank you, [~templedf]. I added the javadocs
> Automatically create YARN control group for pre-mounted cgroups
> ---------------------------------------------------------------
>
> Key: YARN-5849
> URL: https://issues.apache.org/jira/browse/YARN-5849
> Project: Hadoop YARN
> Issue Type: Improvement
> Affects Versions: 2.7.3, 3.0.0-alpha1, 3.0.0-alpha2
> Reporter: Miklos Szegedi
> Assignee: Miklos Szegedi
> Priority: Minor
> Attachments: YARN-5849.000.patch, YARN-5849.001.patch, YARN-5849.002.patch, YARN-5849.003.patch, YARN-5849.004.patch, YARN-5849.005.patch, YARN-5849.006.patch, YARN-5849.007.patch
>
>
> Yarn can be launched with linux-container-executor.cgroups.mount set to false. It will search for the cgroup mount paths set up by the administrator parsing the /etc/mtab file. You can also specify resource.percentage-physical-cpu-limit to limit the CPU resources assigned to containers.
> linux-container-executor.cgroups.hierarchy is the root of the settings of all YARN containers. If this is specified but not created YARN will fail at startup:
> Caused by: java.io.FileNotFoundException: /cgroups/cpu/hadoop-yarn/cpu.cfs_period_us (Permission denied)
> org.apache.hadoop.yarn.server.nodemanager.util.CgroupsLCEResourcesHandler.updateCgroup(CgroupsLCEResourcesHandler.java:263)
> This JIRA is about automatically creating YARN control group in the case above. It reduces the cost of administration.
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