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https://issues.apache.org/jira/browse/YARN-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14008277#comment-14008277
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bc Wong commented on YARN-796:
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Having the NMs specify their own labels is probably better from an
administrative point of view. It's harder for the labels to get out of sync.
Each node can have a "discovery script" that updates its labels, which feeds
into the NM. So an admin can take a bunch of nodes out for upgrade, and put
them back in without having to carefully reconfigure any central mapping file.
> 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: Wangda Tan
> Attachments: YARN-796.patch
>
>
> 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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