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Posted to hdfs-issues@hadoop.apache.org by "WenjingLiu (Jira)" <ji...@apache.org> on 2025/03/05 08:31:00 UTC

[jira] [Created] (HDFS-17752) Host2DatanodeMap will not update when re-register a node with a different hostname

WenjingLiu created HDFS-17752:
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             Summary: Host2DatanodeMap will not update when re-register a node with a different hostname
                 Key: HDFS-17752
                 URL: https://issues.apache.org/jira/browse/HDFS-17752
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: namenode
            Reporter: WenjingLiu


We have HBase RegionServer running, if a DataNode is re-registered with a different hostname, RegionServer will always treat this type of DataNode as a DeadNode, because host2DatanodeMap is not updated accordingly.



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