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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2) Enhance CS to schedule accounting for both memory and cpu cores
Date Thu, 27 Dec 2012 18:18:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-2?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540087#comment-13540087
] 

Alejandro Abdelnur commented on YARN-2:
---------------------------------------

Is there any reason not to use shares instead of CPUs? By using shares:

* We use same terminology like in cgroup CPU controller, which we will leverage for enforcing
CPUs utilization.
* It allows to give a % of CPU
* It allows to over subscribe (by issuing more shares)

                
> Enhance CS to schedule accounting for both memory and cpu cores
> ---------------------------------------------------------------
>
>                 Key: YARN-2
>                 URL: https://issues.apache.org/jira/browse/YARN-2
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: capacityscheduler, scheduler
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>             Fix For: 2.0.3-alpha
>
>         Attachments: MAPREDUCE-4327.patch, MAPREDUCE-4327.patch, MAPREDUCE-4327.patch,
MAPREDUCE-4327-v2.patch, MAPREDUCE-4327-v3.patch, MAPREDUCE-4327-v4.patch, MAPREDUCE-4327-v5.patch,
YARN-2-help.patch, YARN-2.patch, YARN-2.patch, YARN-2.patch, YARN-2.patch, YARN-2.patch, YARN-2.patch
>
>
> With YARN being a general purpose system, it would be useful for several applications
(MPI et al) to specify not just memory but also CPU (cores) for their resource requirements.
Thus, it would be useful to the CapacityScheduler to account for both.

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