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https://issues.apache.org/jira/browse/HDFS-17005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17720934#comment-17720934
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ASF GitHub Bot commented on HDFS-17005:
---------------------------------------

hadoop-yetus commented on PR #5633:
URL: https://github.com/apache/hadoop/pull/5633#issuecomment-1540132696

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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[/blanks-eol.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5633/1/artifact/out/blanks-eol.txt)
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[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-5633/1/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
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   | Reason | Tests |
   |-------:|:------|
   | Failed junit tests | hadoop.hdfs.server.namenode.ha.TestObserverNode |
   |   | hadoop.hdfs.server.datanode.TestDirectoryScanner |
   
   
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   | modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
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> NameJournalStatus JMX is not updated with new JN IP address on JN host change
> -----------------------------------------------------------------------------
>
>                 Key: HDFS-17005
>                 URL: https://issues.apache.org/jira/browse/HDFS-17005
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: journal-node
>    Affects Versions: 2.8.2, 2.10.2, 3.3.4
>            Reporter: Prateek Agarwal
>            Priority: Major
>              Labels: pull-request-available
>
> Whenever a JournalNode host gets replaced, 'org.apache.hadoop.ipc.Client' is 
> able to refresh the new JournalNode IP by re-resolving the JN DNS or host.
> However, the JMX metrics exposed by Namenode still point to the stale JN IP 
> address. For example:
> {code}
> "NameJournalStatus" : "[{\"manager\":\"QJM to [10.92.29.151:8485, 
> 10.94.17.167:8485, 10.92.59.158:8485]\",\"stream\":\"Writing segment 
> beginning at txid 93886612. \\n10.92.29.151:8485 (Written txid 93894676), 
> 10.94.17.167:8485 (Written txid 93894674 (2 txns/1ms behind)), 
> 10.92.59.158:8485 (Written txid 
> 93894676)\",\"disabled\":\"false\",\"required\":\"true\"},{\"manager\":\"FileJournalManager(root=/data/1/dfs/name-data)\",\"stream\":\"EditLogFileOutputStream(/data/1/dfs/name-data/current/edits_inprogress_0000000000093886612)\",\"disabled\":\"false\",\"required\":\"false\"}]",
> {code}
> The IP address '10.92.29.151' isn't updated even if the JN node now points to 
> an updated IP address, say, '10.36.72.221'.



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