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From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-752) In AMRMClient, automatically add corresponding rack requests for requested nodes
Date Fri, 07 Jun 2013 20:40:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13678405#comment-13678405
] 

Bikas Saha commented on YARN-752:
---------------------------------

User cannot provide a wrong rack for a node. User can provide a wrong rack by itself. If a
rack is missing then it will be corrected by AMRMClient. If there is another different rack,
its either a valid rack or a rack that does not exist. We should probably resolve nodes and
racks to make sure they are all valid locations. Different jira perhaps. This kind of depends
on YARN-435.
                
> In AMRMClient, automatically add corresponding rack requests for requested nodes
> --------------------------------------------------------------------------------
>
>                 Key: YARN-752
>                 URL: https://issues.apache.org/jira/browse/YARN-752
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: api, applications
>    Affects Versions: 2.0.4-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: YARN-752-1.patch, YARN-752-1.patch, YARN-752.patch
>
>
> A ContainerRequest that includes node-level requests must also include matching rack-level
requests for the racks that those nodes are on.  When a node is present without its rack,
it makes sense for the client to automatically add the node's rack.

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