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https://issues.apache.org/jira/browse/HDFS-9364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14994859#comment-14994859
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Xiao Chen commented on HDFS-9364:
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Thanks [~zhz], attached patch 4 with the fix.
> 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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