[jira] [Created] (HDFS-5920) Support rollback of rolling upgrade in NameNode and JournalNodes

[Jing Zhao (JIRA)]

Jing Zhao created HDFS-5920:
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             Summary: Support rollback of rolling upgrade in NameNode and 
JournalNodes
                 Key: HDFS-5920
                 URL: https://issues.apache.org/jira/browse/HDFS-5920
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: journal-node, namenode
            Reporter: Jing Zhao
            Assignee: Jing Zhao


This jira provides rollback functionality for NameNode and JournalNode in 
rolling upgrade.



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