[jira] [Created] (HDFS-5585) Provide admin commands for data node upgrade

[Kihwal Lee (JIRA)]

Kihwal Lee created HDFS-5585:
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             Summary: Provide admin commands for data node upgrade
                 Key: HDFS-5585
                 URL: https://issues.apache.org/jira/browse/HDFS-5585
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Kihwal Lee


Several new methods to ClientDatanodeProtocol may need to be added to support 
querying version, initiating upgrade, etc.  The admin CLI needs to be added as 
well.



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