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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