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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9364) Unnecessary DNS resolution attempts when creating NameNodeProxies
Date Tue, 10 Nov 2015 22:39:11 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14999489#comment-14999489
] 

Hudson commented on HDFS-9364:
------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #592 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/592/])
HDFS-9364. Unnecessary DNS resolution attempts when creating (zhz: rev 73b94d789969354bb9a6872d99976763ca8470d7)
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/NameNodeProxiesClient.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSUtilClient.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSClientFailover.java


> 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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