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https://issues.apache.org/jira/browse/HDFS-3688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe updated HDFS-3688:
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Status: Patch Available (was: Open)
> Namenode loses datanode hostname if datanode re-registers
> ---------------------------------------------------------
>
> Key: HDFS-3688
> URL: https://issues.apache.org/jira/browse/HDFS-3688
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Affects Versions: 0.23.3
> Reporter: Jason Lowe
> Attachments: HDFS-3688.patch
>
>
> If a datanode ever re-registers with the namenode (e.g.: namenode restart,
> temporary network cut, etc.) then the datanode ends up registering with an IP
> address as the datanode name rather than the hostname.
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