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https://issues.apache.org/jira/browse/HDFS-9458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15048008#comment-15048008
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Xiao Chen commented on HDFS-9458:
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First, thanks [~cnauroth] for pointing me to this JIRA from HDFS-9512. My
initial search didn't land me here. [~yzhangal]'s HDFS-6054 seems to be another
case so I think we can do it in parallel.
I took Chris' advice in the comment, and reviewed around {{TestBackupNode}},
didn't find similar problems other than the NN http port. I did see that NN
backup http port was unnecessarily set twice. Attached patch 1 to reflex the
change.
Locally tested with {{nc -l 50070}} to make sure the test fails without the
fix, passes with. Also tried with the configured rpc port 1234, and the test
can pass. Please help review. Thanks!
BTW, looks like [~xiaobingo] accidentally assigned this to me, so I'd take the
coincidence for now. :)
> TestBackupNode always binds to port 50070, which can cause bind failures.
> -------------------------------------------------------------------------
>
> Key: HDFS-9458
> URL: https://issues.apache.org/jira/browse/HDFS-9458
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Reporter: Chris Nauroth
> Assignee: Xiao Chen
> Attachments: HDFS-9458.001.patch
>
>
> {{TestBackupNode}} does not override port settings to use a dynamically
> selected port for the NameNode HTTP server. It uses the default of 50070
> defined in hdfs-default.xml. This should be changed to select a dynamic port
> to avoid bind errors.
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