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https://issues.apache.org/jira/browse/YARN-796?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14104926#comment-14104926
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Wangda Tan commented on YARN-796:
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bq. As I've said before, I basically want something similar to the health check
code: I provide something executable that the NM can run at runtime that will
provide the list of labels. If we need to add labels, it's updating the script
which is a much smaller footprint than redeploying HADOOP_CONF_DIR everywhere.
I understand now, it's meaningful since it's a flexible way for admin to set
labels in NM side. Maybe add a {{NodeLabelCheckerService}} to NM similar to
{{NodeHealthCheckerService}} should work. I'll create a separated JIRA for
setting labels in NM side under this ticket and leave design/implementation
discussion here.
> 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
> Affects Versions: 2.4.1
> Reporter: Arun C Murthy
> Assignee: Wangda Tan
> Attachments: LabelBasedScheduling.pdf,
> Node-labels-Requirements-Design-doc-V1.pdf,
> Node-labels-Requirements-Design-doc-V2.pdf, YARN-796.node-label.demo.patch.1,
> YARN-796.patch, YARN-796.patch4
>
>
> 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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