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From "Arun C Murthy (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 19:48:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-2?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540118#comment-13540118
] 

Arun C Murthy commented on YARN-2:
----------------------------------

Agreed. Cpu-shares sounds fairly specific - and it's hard to compare across heterogenous nodes,
furthermore it's hard for end-users to understand and specify it.

W.r.t vcores - I suspect we could informally standardize as 1GHz etc., but an admin can always
change it for finer/coarser granularity. Makes sense?
                
> 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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