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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 Thu, 04 Apr 2013 17:36:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13622558#comment-13622558

Arun C Murthy commented on YARN-392:

[~bikassaha] I'm against using timers for specifying locality delays - it doesn't make sense
for a variety of reasons documented elsewhere. 


[~sandyr] I just uploaded a patch I lost track of for a week or so on YARN-398. Looks like
we both are doing the same thing. I'm happy to repurpose one of the two jiras for CS while
the other can do the same for FS. Makes sense? 

In my patch I called the flag as 'strictLocality' which defaults to 'false'. That should solve
the need for white-lists. Makes sense? 


I agree we should tackle black-listing separately.

> 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-392-1.patch, 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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