Sunil G commented on YARN-3093:

Thank you [~rohithsharma] and [~leftnoteasy]

I was thinking of keeping this config file for add/remove/replaceLabel 
operations. Internally we could use same existing logic.

A conf file for replace can be like
client $ cat replace.conf
replaceLabelsOnNode [

is this what you also thought about?

Similarly we can specify the operation as *replaceLabelsOnNode / 
addToClusterNodeLabels / removeFromClusterNodeLabels* followed by the input 
separated by new line or space with square braces.

> Support load command from admin [Helps to load big set of labels]
> -----------------------------------------------------------------
>                 Key: YARN-3093
>                 URL: https://issues.apache.org/jira/browse/YARN-3093
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>    Affects Versions: 2.6.0
>            Reporter: Sunil G
>            Assignee: Sunil G
> Proposing "yarn rmadmin -load -nodelabels <filename>"
> "nodelabels" can be one such option here, and this can be generalized by 
> giving other options later.
> Advantage of this command will be an easier configuration. Assume admin need 
> to load labels to more than 20+ nodes, current command is little difficult. 
> If these config can be preloaded in a file, and then can upload to RM. With 
> existing parsing and update logic, same can be achieved.
> I am showing a simpler proposed config file.
> {noformat}
> rm1 $ cat node_label.conf
> add [
> label1,label2,label3,label4,label11,label12,label13,label14,abel21,label22,label23,label24
> ]  
> replace[
> node1:port=label1,label2,label23,label24
> node2:port=label4,abel11,label12,label13,label14,label21
> node3:port=label2,label3,label4,label11,label12,label13,label14
> node4:port=label14,label21,label22,label23,label24
> node5:port=label14,label21,label22,label23,label24
> node6:port=label4,label11,label12,label13,label14,label21,label22,label23,label24
> ]
> {noformat}
> A restriction on file size can be kept to avoid uploading very huge files. 
> Please share your opinion.

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