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