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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1042) add ability to specify affinity/anti-affinity in container requests
Date Tue, 10 Sep 2013 17:39:52 GMT

    [ https://issues.apache.org/jira/browse/YARN-1042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763273#comment-13763273
] 

Luke Lu commented on YARN-1042:
-------------------------------

bq. BTW, it seems the effort is more on application side. Do we think it is better to move
to MAPREDUCE project?

Although you can do a lot at the app side with container filtering, protocol and scheduler
support will make it more efficient. I guess the intention of the jira is more for the latter,
that affinity support should be app independent.
                
> add ability to specify affinity/anti-affinity in container requests
> -------------------------------------------------------------------
>
>                 Key: YARN-1042
>                 URL: https://issues.apache.org/jira/browse/YARN-1042
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: resourcemanager
>    Affects Versions: 3.0.0
>            Reporter: Steve Loughran
>            Assignee: Junping Du
>         Attachments: YARN-1042-demo.patch
>
>
> container requests to the AM should be able to request anti-affinity to ensure that things
like Region Servers don't come up on the same failure zones. 
> Similarly, you may be able to want to specify affinity to same host or rack without specifying
which specific host/rack. Example: bringing up a small giraph cluster in a large YARN cluster
would benefit from having the processes in the same rack purely for bandwidth reasons.

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