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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-392) Make it possible to schedule to specific nodes without dropping locality
Date Tue, 26 Feb 2013 00:40:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13586529#comment-13586529
] 

Arun C Murthy commented on YARN-392:
------------------------------------

Gang-scheduling, deadline-scheduling etc. are not *hints*.

They are core features in the scheduler and should be treated as such i.e. we should explicitly
support them in the scheduler.

I've commented on YARN-424 too.
                
> Make it possible to schedule to specific nodes without dropping locality
> ------------------------------------------------------------------------
>
>                 Key: YARN-392
>                 URL: https://issues.apache.org/jira/browse/YARN-392
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Bikas Saha
>            Assignee: Sandy Ryza
>         Attachments: YARN-392.patch
>
>
> Currently its not possible to specify scheduling requests for specific nodes and nowhere
else. The RM automatically relaxes locality to rack and * and assigns non-specified machines
to the app.

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