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https://issues.apache.org/jira/browse/YARN-3964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14909031#comment-14909031
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Naganarasimha G R commented on YARN-3964:
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Hi [~dian.fu],
bq. Secondly, it's difficult to determine when to fetch the labels for all the
nodes as some nodes may still not registered. Thoughts?
makes sense, missed the point that the provider provides labels for the
requested nodes only !.
Also have a feeling that default interval time can be as big as 30 mins as we
are updating the labels for all nodes without checking if its modified or not.
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-3964.1.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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