Jinjiang Ling created YARN-7925:

             Summary: Some NPE errors caused a display errors when setting node 
                 Key: YARN-7925
                 URL: https://issues.apache.org/jira/browse/YARN-7925
             Project: Hadoop YARN
          Issue Type: Bug
    Affects Versions: 3.1.0
            Reporter: Jinjiang Ling
            Assignee: Jinjiang Ling

I'm trying to using the node label with latest hadoop (3.1.0-SNAPSHOT). But 
when I add a new node label and append a nodemanager to it, sometimes it may 
cause a display error.


Then I found *when there is no queues can access to the label*,  this error 
will happen.

After checking the log, I find some NPE errors.

Caused by: java.lang.NullPointerException


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