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From "Karthik Kambatla (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 20:40:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-2?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540137#comment-13540137
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Karthik Kambatla commented on YARN-2:
-------------------------------------

By the way, the API could be still be using a float. And, users can specify share in terms
of a physical core. We can translate it to the appropriate virtual cores. For instance, if
a user asks for 0.5 core on a node with 8 cores, it turns out to be 64 virtual cores. 
                
> 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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