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From "Yuliya Feldman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-796) Allow for (admin) labels on nodes and resource-requests
Date Sat, 02 Aug 2014 21:49:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14083753#comment-14083753

Yuliya Feldman commented on YARN-796:

I am out of country now with very poor internet connectivity, so won't be able to answer comprehensively.
To: [~stevel@apache.org]
Really appreciate your comments
I definitely agree with majority of the comments you made. Especially with how much code it
takes to add a single method to rmadmin command - may be we missed something, but it is really
too much.
regarding wrapper on top of LabelManager to behave as a service - in realy life situation
service is instantiated once per process - which is exactly what we need, as it is really
a singleton, but since UnitTests create service per unit test it created issues with Service
 States in this case.
About waiting for 6 secs between tests - allowing labels ile to reload - can be reduced further.

> 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,
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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