Wangda Tan commented on YARN-2880:

Thanks for taking up this JIRA,
bq. IIUC, as of now recovery is not yet supported till YARN-2800 is committed.
Not really, YARN-2800 is just to make a better user experience, recovery is 
already supported now.

bq. Any document available?
Not yet, documentation work is still in progress

bq. How can I configure Nodelabels? Is it only rmadmin as of now?
You can use rmadmin or REST API to configure node labels

bq. I set labels to NM from rmadmin,but how do I make use of these labels?
Before documentation available, you can take a look at 
testQueueParsing...Label... And also, you can take a look 
TestContainerAllocation#test..Labels, they're integration test in RM side. For 
end-to-end test, you can take a look at TestDistributedShellWithNodeLabels.

Please let me know if you have any other questions.


> Add a test in TestRMRestart to make sure node labels will be recovered if it 
> is enabled
> ---------------------------------------------------------------------------------------
>                 Key: YARN-2880
>                 URL: https://issues.apache.org/jira/browse/YARN-2880
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Wangda Tan
>            Assignee: Rohith
> As suggested by [~ozawa], 
> [link|https://issues.apache.org/jira/browse/YARN-2800?focusedCommentId=14217569&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14217569].
>  We should have a such test to make sure there will be no regression

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