jiangyu created YARN-4493:

             Summary: move queue can make app don't belong to any queue
                 Key: YARN-4493
                 URL: https://issues.apache.org/jira/browse/YARN-4493
             Project: Hadoop YARN
          Issue Type: Bug
          Components: fairscheduler
    Affects Versions: 2.7.1, 2.6.0, 2.4.0
            Reporter: jiangyu
            Priority: Minor

When moving a running application to a different queue, the current implement 
don't check if the app can run in the new queue before remove it from current 
queue. So if the destination queue is full, the app will throw exception, and 
don't belong to any queue.    
After that, the queue become orphane, can not schedule any resources. If you 
kill the app,  the removeApp method in FSLeafQueue will throw 
IllealStateException of "Given app to remove app does not exist in queue ..." 
So i think we should check if the destination queue can run the app before 
remove it from the current queue.  
The patch is from our revision.

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