[jira] [Created] (HDFS-7642) NameNode should periodically log DataNode decommissioning progress

[Zhe Zhang (JIRA)]

Zhe Zhang created HDFS-7642:
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             Summary: NameNode should periodically log DataNode decommissioning 
progress
                 Key: HDFS-7642
                 URL: https://issues.apache.org/jira/browse/HDFS-7642
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Zhe Zhang
            Assignee: Zhe Zhang
            Priority: Minor


We've see a case where the decommissioning was stuck due to some files have 
more replicas then DNs. HDFS-5662 fixes this particular issue but there are 
other use cases where the decommissioning process might get stuck or slow down. 
Some monitoring / logging will help debugging those issues.



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