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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-796) Allow for (admin) labels on nodes and resource-requests
Date Mon, 17 Mar 2014 02:23:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13937413#comment-13937413
] 

Junping Du commented on YARN-796:
---------------------------------

[~acmurthy], that sounds great. Through this, RM is more stateless on labels as the labels
are rebuild through NM registering when RM get restart. The map (holding in RM) from label
to NMs can be printed to help for trouble-shooting. The reference counting on labels can guarantee
any valid label for RR is supported by specific number of NMs. In addition, for correcting
or dynamic adding label info, we may provide NM API to add/update label info that can refresh
NM's new label config to RM.

> 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
>            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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