[jira] [Created] (HDFS-14782) Add a new fsck command to get detailed decommission information.

["Jinglun (Jira)" <ji...@apache.org>]

Jinglun created HDFS-14782:
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             Summary: Add a new fsck command to get detailed decommission information.
                 Key: HDFS-14782
                 URL: https://issues.apache.org/jira/browse/HDFS-14782
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Jinglun


When we decommission datanodes, sometimes the decommission progress is blocked. From the Namenode dfshealth page, the statistics of decommissioning datanode only tells us the number but not which blocks are 'Undre replicated blocks', 'Blocks with no live replicas' and 'Under Replicated Blocks In files under construction' . So we add a new fsck command to fetch the detail information of decommissioning nodes. We can use this command to target the blocks that blocking the node from decommission.



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