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Posted to hdfs-dev@hadoop.apache.org by "Chris Nauroth (JIRA)" <ji...@apache.org> on 2016/10/19 17:33:59 UTC

[jira] [Created] (HDFS-11034) Provide a command line tool to clear decommissioned DataNode information from the NameNode without restarting.

Chris Nauroth created HDFS-11034:
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             Summary: Provide a command line tool to clear decommissioned DataNode information from the NameNode without restarting.
                 Key: HDFS-11034
                 URL: https://issues.apache.org/jira/browse/HDFS-11034
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: namenode
            Reporter: Chris Nauroth


Information about decommissioned DataNodes remains tracked in the NameNode for the entire NameNode process lifetime.  Currently, the only way to clear this information is to restart the NameNode.  This issue proposes to add a way to clear this information online, without requiring a process restart.



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