jufeng li created YARN-10482:
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             Summary: Capacity Scheduler seems locked,RM cannot submit any new 
job,and change active RM  manually return to normal
                 Key: YARN-10482
                 URL: https://issues.apache.org/jira/browse/YARN-10482
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacity scheduler, capacityscheduler, resourcemanager, RM
    Affects Versions: 3.1.1
            Reporter: jufeng li


Capacity Scheduler seems locked,RM cannot submit any new job, and change active 
RM manually return to normal。its a serious bug!I check the stack log,and found 
some info about *ReentrantReadWriteLock。*Can  anyone can solve this issue?I 
uploaded the stack when RM normally and unnormally。



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