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https://issues.apache.org/jira/browse/YARN-3964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14933342#comment-14933342
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Dian Fu commented on YARN-3964:
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Hi [~leftnoteasy],
Thanks a lot for your review. Updated the patch according to your comments.
Regarding to the issues YARN-4106 and YARN-4176, this patch doesn't have the
same issue as currently when updating node labels,
{{RMDelegatedNodeLabelsUpdater}} doesn't check if the labels for a node has
changed and just call {{RMNodeLabelsManager#replaceLabelsOnNode}}. The reason
is that for {{delegated-centralized}} type, we only update the nodes -> labels
map stored in memory and this should be very fast. Thoughts?
> Support NodeLabelsProvider at Resource Manager side
> ---------------------------------------------------
>
> Key: YARN-3964
> URL: https://issues.apache.org/jira/browse/YARN-3964
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Dian Fu
> Assignee: Dian Fu
> Attachments: YARN-3964 design doc.pdf, YARN-3964.002.patch,
> YARN-3964.003.patch, YARN-3964.004.patch, YARN-3964.005.patch,
> YARN-3964.006.patch, YARN-3964.007.patch, YARN-3964.007.patch,
> YARN-3964.008.patch, YARN-3964.009.patch, YARN-3964.010.patch,
> YARN-3964.011.patch, YARN-3964.012.patch, YARN-3964.1.patch
>
>
> Currently, CLI/REST API is provided in Resource Manager to allow users to
> specify labels for nodes. For labels which may change over time, users will
> have to start a cron job to update the labels. This has the following
> limitations:
> - The cron job needs to be run in the YARN admin user.
> - This makes it a little complicate to maintain as users will have to make
> sure this service/daemon is alive.
> Adding a Node Labels Provider in Resource Manager will provide user more
> flexibility.
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