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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-796) Allow for (admin) labels on nodes and resource-requests
Date Thu, 13 Jun 2013 07:02:21 GMT

    [ https://issues.apache.org/jira/browse/YARN-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13681972#comment-13681972
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Arun C Murthy commented on YARN-796:
------------------------------------

Yes, we'll need to add admin api (via rmadmin) to add/remove labels - obviously we can allow
configs for nodes to startup with set of labels which they report during registration.

Initially, I'm thinking AND is simplest for multiple labels. Consecutive requests, as today,
override previous requests.

Use case, as I mentioned, are ability to segregate clusters based on OS, processor architecture
etc. and hence they aren't resource capabilities, rather they are *constraints* which is what
labels try to model explicitly.
                
> 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: New Feature
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>
> 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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