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https://issues.apache.org/jira/browse/HDFS-17752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaoqiao He resolved HDFS-17752.
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Fix Version/s: 3.5.0
Hadoop Flags: Reviewed
Resolution: Fixed
> 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
> Assignee: WenjingLiu
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.5.0
>
>
> 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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