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https://issues.apache.org/jira/browse/HDFS-9364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhe Zhang updated HDFS-9364:
----------------------------
          Resolution: Fixed
        Hadoop Flags: Reviewed
       Fix Version/s: 2.8.0
    Target Version/s: 2.8.0
              Status: Resolved  (was: Patch Available)

> 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
>             Fix For: 2.8.0
>
>         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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