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From "Thomas Graves (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-408) Capacity Scheduler delay scheduling should not be disabled by default
Date Wed, 20 Feb 2013 02:31:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581884#comment-13581884
] 

Thomas Graves commented on YARN-408:
------------------------------------

Can you please provide more detail.  Having it on by default makes it easy for someone to
have it set incorrectly since clusters have varying size.  I think the idea of setting it
to the number of racks was to balance the time you delay vs getting exact locality.  Do you
have any data on the reason for changing it?
                
> Capacity Scheduler delay scheduling should not be disabled by default
> ---------------------------------------------------------------------
>
>                 Key: YARN-408
>                 URL: https://issues.apache.org/jira/browse/YARN-408
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: scheduler
>    Affects Versions: 3.0.0, 2.0.3-alpha
>            Reporter: Mayank Bansal
>            Assignee: Mayank Bansal
>            Priority: Minor
>         Attachments: YARN-408-trunk.patch
>
>
> Capacity Scheduler delay scheduling should not be disabled by default.
> Enabling it to number of nodes in one rack.
> Thanks,
> Mayank

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