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https://issues.apache.org/jira/browse/MAPREDUCE-4334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413499#comment-13413499
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Todd Lipcon commented on MAPREDUCE-4334:
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bq. Preventing such onerous requirements on cluster setup is a key goal - 
something which initially led to creation of LinuxTaskController etc.

How is it onerous? Packages could easily do this as part of the install on 
platforms where it's supported.

It seems equivalent to the installation of the LTC itself, which requires root 
to make it setuid, right?

Andrew: do the cgroups persist cross-reboot, or does that cgcreate command need 
to go the startup scripts?
                
> Add support for CPU isolation/monitoring of containers
> ------------------------------------------------------
>
>                 Key: MAPREDUCE-4334
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4334
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>            Reporter: Arun C Murthy
>            Assignee: Andrew Ferguson
>         Attachments: MAPREDUCE-4334-pre1.patch, 
> MAPREDUCE-4334-pre2-with_cpu.patch, MAPREDUCE-4334-pre2.patch, 
> MAPREDUCE-4334-pre3-with_cpu.patch, MAPREDUCE-4334-pre3.patch
>
>
> Once we get in MAPREDUCE-4327, it will be important to actually enforce 
> limits on CPU consumption of containers. 
> Several options spring to mind:
> # taskset (RHEL5+)
> # cgroups (RHEL6+)

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