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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9369) DNS#reverseDns() can return hostname with . appended at the end
Date Fri, 08 Mar 2013 10:48:16 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13597010#comment-13597010
] 

Hudson commented on HADOOP-9369:
--------------------------------

Integrated in Hadoop-Yarn-trunk #149 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/149/])
    Move CHANGES.txt entry for HADOOP-9369 to the correct place. (Revision 1454174)
HADOOP-9369. DNS#reverseDns() can return hostname with . appended at the end. Contributed
by Karthik Kambatla. (Revision 1454172)

     Result = SUCCESS
atm : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1454174
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt

atm : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1454172
Files : 
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/DNS.java

                
> DNS#reverseDns() can return hostname with . appended at the end
> ---------------------------------------------------------------
>
>                 Key: HADOOP-9369
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9369
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: net
>    Affects Versions: 1.1.1, 2.0.3-alpha, 0.23.5
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>             Fix For: 1.2.0, 2.0.5-beta
>
>         Attachments: hadoop-9369-branch1.patch, hadoop-9369.patch, hadoop-9369.patch
>
>
> DNS#reverseDns uses javax.naming.InitialDirContext to do a reverse DNS lookup. This can
sometimes return hostnames with a . at the end.
> Saw this happen on hadoop-1: two nodes with tasktracker.dns.interface set to eth0

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