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https://issues.apache.org/jira/browse/HDFS-9364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14998998#comment-14998998
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Zhe Zhang commented on HDFS-9364:
---------------------------------

Thanks Xiao for updating the patch and verifying Jenkins results. Agreed that 
{{testHedgingWhenOneFails}} is the only seemingly related failure. I verified 
that the test doesn't trigger the changed code.

+1, I will commit the patch shortly.

> Unnecessary DNS resolution attempts when creating NameNodeProxies
> -----------------------------------------------------------------
>
>                 Key: HDFS-9364
>                 URL: https://issues.apache.org/jira/browse/HDFS-9364
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, performance
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>         Attachments: HDFS-9364.001.patch, HDFS-9364.002.patch, 
> HDFS-9364.003.patch, HDFS-9364.004.patch
>
>
> When creating NameNodeProxies, we always try to DNS-resolve namenode URIs. 
> This is unnecessary if the URI is logical, and may be significantly slow if 
> the DNS is having problems. 



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