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From "Viplav Madasu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-796) Allow for (admin) labels on nodes and resource-requests
Date Wed, 03 Sep 2014 03:04:57 GMT

    [ https://issues.apache.org/jira/browse/YARN-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14119233#comment-14119233
] 

Viplav Madasu commented on YARN-796:
------------------------------------

Hi Wangda,
I was looking into your patch and noticed a bug in the patch in remove labels processing.
 Basically labels are not being removed. You can do a simple verification of this by removing
a label twice. You don't get an error. The code that causes this issue is in  the yarn client
CLI code: line removeLabels:318 of RMAdminCLI.java should be 
  labels.add(p);
instead of 
 labels.remove(p);

Regards,
Viplav



> Allow for (admin) labels on nodes and resource-requests
> -------------------------------------------------------
>
>                 Key: YARN-796
>                 URL: https://issues.apache.org/jira/browse/YARN-796
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 2.4.1
>            Reporter: Arun C Murthy
>            Assignee: Wangda Tan
>         Attachments: LabelBasedScheduling.pdf, Node-labels-Requirements-Design-doc-V1.pdf,
Node-labels-Requirements-Design-doc-V2.pdf, YARN-796.node-label.demo.patch.1, YARN-796.patch,
YARN-796.patch4
>
>
> It will be useful for admins to specify labels for nodes. Examples of labels are OS,
processor architecture etc.
> We should expose these labels and allow applications to specify labels on resource-requests.
> Obviously we need to support admin operations on adding/removing node labels.



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