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From "Varun Vasudev (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-2440) Cgroups should allow YARN containers to be limited to allocated cores
Date Wed, 27 Aug 2014 08:42:58 GMT

     [ https://issues.apache.org/jira/browse/YARN-2440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Varun Vasudev updated YARN-2440:

    Attachment: apache-yarn-2440.3.patch

Uploaded new patch which addresses [~jlowe] comments. 
1. Dropped yarn.nodemanager.containers-cpu-cores, only percentage can be specified.
2. Renamed yarn.nodemanager.containers-cpu-percentage to yarn.nodemanger.containers-limit-cpu-percentage
3. Added log message if we are unable to use Cgroups because the values  for period or quota
are too low.
4. Added check for minimum value of quota
5. Don't set any period or quota settings if all CPUs are being used.
6. Renamed getContainerCores to getContainersCores

> Cgroups should allow YARN containers to be limited to allocated cores
> ---------------------------------------------------------------------
>                 Key: YARN-2440
>                 URL: https://issues.apache.org/jira/browse/YARN-2440
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Varun Vasudev
>            Assignee: Varun Vasudev
>         Attachments: apache-yarn-2440.0.patch, apache-yarn-2440.1.patch, apache-yarn-2440.2.patch,
apache-yarn-2440.3.patch, screenshot-current-implementation.jpg
> The current cgroups implementation does not limit YARN containers to the cores allocated
in yarn-site.xml.

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