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Posted to yarn-issues@hadoop.apache.org by "Yang Hao (JIRA)" <ji...@apache.org> on 2014/12/16 12:52:16 UTC

[jira] [Commented] (YARN-1042) add ability to specify affinity/anti-affinity in container requests

    [ https://issues.apache.org/jira/browse/YARN-1042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14248179#comment-14248179 ] 

Yang Hao commented on YARN-1042:
--------------------------------

A configuration should be add for yarn-site.xml

> 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: Sub-task
>          Components: resourcemanager
>    Affects Versions: 3.0.0
>            Reporter: Steve Loughran
>            Assignee: Arun C Murthy
>         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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