Dian Fu created HDFS-6484:
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             Summary: Disable APIs which may modify the mirror cluster
                 Key: HDFS-6484
                 URL: https://issues.apache.org/jira/browse/HDFS-6484
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Dian Fu
            Assignee: Dian Fu


Mirror cluster should not be modified by DFSClients, it can only be modified by 
primary cluster. So we should disable some APIs which may be used by DFSClient 
to modify the mirror cluster.



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