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From "Andrew Ferguson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4334) Add support for CPU isolation/monitoring of containers
Date Wed, 25 Jul 2012 23:52:34 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13422740#comment-13422740
] 

Andrew Ferguson commented on MAPREDUCE-4334:
--------------------------------------------

Forgot to mention that this version requires the "cgexec" binary, which, while not required
for cgroups, is commonly available. If we choose not to introduce a dependency on cgexec,
then we can return to modifying the C code in LinuxContainerExecutor, as the previous version
of this patch did.

thanks,
Andrew
                
> 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-executor-v1.patch, MAPREDUCE-4334-executor-v2.patch,
MAPREDUCE-4334-pre1.patch, MAPREDUCE-4334-pre2-with_cpu.patch, MAPREDUCE-4334-pre2.patch,
MAPREDUCE-4334-pre3-with_cpu.patch, MAPREDUCE-4334-pre3.patch, MAPREDUCE-4334-v1.patch, MAPREDUCE-4334-v2.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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