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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5122) Support failover and retry in WebHdfsFileSystem for NN HA
Date Thu, 19 Sep 2013 13:30:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13771882#comment-13771882
] 

Hudson commented on HDFS-5122:
------------------------------

SUCCESS: Integrated in Hadoop-Hdfs-trunk #1527 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1527/])
Move HDFS-5122 from Release 2.1.1-beta to Release 2.3.0 in CHANGES.txt (jing9: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1524581)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
HDFS-5122. Support failover and retry in WebHdfsFileSystem for NN HA. Contributed by Haohui
Mai. (jing9: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1524562)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSUtil.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHDFSForHA.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/WebHdfsTestUtil.java

                
> Support failover and retry in WebHdfsFileSystem for NN HA
> ---------------------------------------------------------
>
>                 Key: HDFS-5122
>                 URL: https://issues.apache.org/jira/browse/HDFS-5122
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ha, webhdfs
>    Affects Versions: 2.1.0-beta
>            Reporter: Arpit Gupta
>            Assignee: Haohui Mai
>             Fix For: 2.3.0
>
>         Attachments: HDFS-5122.001.patch, HDFS-5122.002.patch, HDFS-5122.003.patch, HDFS-5122.004.patch,
HDFS-5122.patch
>
>
> Bug reported by [~arpitgupta]:
> If the dfs.nameservices is set to arpit,
> {code}
> hdfs dfs -ls webhdfs://arpit/tmp
> {code}
> does not work. You have to provide the exact active namenode hostname. On an HA cluster
using dfs client one should not need to provide the active nn hostname.
> To fix this, we try to 
> 1) let WebHdfsFileSystem support logical NN service name
> 2) add failover_and_retry functionality in WebHdfsFileSystem for NN HA

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