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From "Srikanth Kandula (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2745) YARN new pluggable scheduler which does multi-resource packing
Date Tue, 18 Nov 2014 05:02:36 GMT

    [ https://issues.apache.org/jira/browse/YARN-2745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14215720#comment-14215720

Srikanth Kandula commented on YARN-2745:

Thanks Wangda.

Re: Yarn-314, that would be a good add! Our prototype implementation did not use this functionality
(same priority + locality but different resource size). Because, we assumed that all of the
tasks in a stage (e.g., map or reduce) have the same resource demand.  While this is a simplifying
assumption and makes things easier to estimate, it is not always correct especially when there
is skew. So the functionality in Yarn-314 would be a good thing to have and use here too.

> YARN new pluggable scheduler which does multi-resource packing
> --------------------------------------------------------------
>                 Key: YARN-2745
>                 URL: https://issues.apache.org/jira/browse/YARN-2745
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: resourcemanager, scheduler
>            Reporter: Robert Grandl
>         Attachments: sigcomm_14_tetris_talk.pptx, tetris_paper.pdf
> In this umbrella JIRA we propose a new pluggable scheduler, which accounts for all resources
used by a task (CPU, memory, disk, network) and it is able to achieve three competing objectives:
fairness, improve cluster utilization and reduces average job completion time.

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