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https://issues.apache.org/jira/browse/HDFS-8675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14603954#comment-14603954
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Walter Su commented on HDFS-8675:
---------------------------------
NN declares a DN DEAD
-->DN sends an IBR
-->catch Remote IOException, sleep 1s
-->DN sends an IBR
-->catch Remote IOException, sleep 1s
-->DN sends an IBR
-->catch Remote IOException, sleep 1s
-->heatbeat due, DN sends an heatbeat
-->DN get DNA_REGISTER
-->DN registered
-->successfully sneds an IBR
I think it's not an issue, is it?
> IBRs from dead DNs go into infinite loop
> ----------------------------------------
>
> Key: HDFS-8675
> URL: https://issues.apache.org/jira/browse/HDFS-8675
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.6.0
> Reporter: Daryn Sharp
>
> If the DN sends an IBR after the NN declares it dead, the NN returns an IOE
> of unregistered or dead. The DN catches the IOE, ignores it, and infinitely
> loops spamming the NN with retries.
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