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 
2. Renamed yarn.nodemanager.containers-cpu-percentage to 
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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