Vinod Kumar Vavilapalli commented on YARN-2786:

bq. What is the difference between a user running a command that adds an hbase 
attribute to a node, the configuration file listing the hbase attribute to a 
node, the configuration on the node manager that says it has the hbase 
attribute, and the dynamic script telling the NM has the hbase attribute?
I believe this has been discussed to death at YARN-796 & friends. We now are 
doing YARN-2495 too. Sites who prefer to choose one over the other can do so 
without any concern.

bq. This is exactly why I wanted an analog of dfsadmin -report. This is a user 
consistency issue. The rmadmin -report should list all the nodes as well as 
what their node labels are (amongst other interesting things).
Agree this is a user consistency issue. But "dfsadmin -report" is not great at 
all, no matter how much you got used to it. It's not an admin privilege to list 
the nodes - any user who has the right ACLs should be able to do it. We don't 
need to keep compatibility with HDFS.

> Create yarn cluster CLI to enable list node labels collection
> -------------------------------------------------------------
>                 Key: YARN-2786
>                 URL: https://issues.apache.org/jira/browse/YARN-2786
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api, client, resourcemanager
>            Reporter: Wangda Tan
>            Assignee: Wangda Tan
>         Attachments: YARN-2786-20141031-1.patch, YARN-2786-20141031-2.patch, 
> YARN-2786-20141102-2.patch, YARN-2786-20141102-3.patch, 
> YARN-2786-20141103-1-full.patch, YARN-2786-20141103-1-without-yarn.cmd.patch, 
> YARN-2786-20141104-1-full.patch, YARN-2786-20141104-1-without-yarn.cmd.patch
> With YARN-2778, we can list node labels on existing RM nodes. But it is not 
> enough, we should be able to: 
> 1) list node labels collection
> The command should start with "yarn cluster ...", in the future, we can add 
> more functionality to the "yarnClusterCLI"

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