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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-848) Nodemanager does not register with RM using the fully qualified hostname
Date Tue, 18 Jun 2013 22:37:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13687311#comment-13687311

Hadoop QA commented on YARN-848:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 22 new or modified
test files.

    {color:red}-1 javac{color:red}.  The patch appears to cause the build to fail.

Console output: https://builds.apache.org/job/PreCommit-YARN-Build/1336//console

This message is automatically generated.
> Nodemanager does not register with RM using the fully qualified hostname
> ------------------------------------------------------------------------
>                 Key: YARN-848
>                 URL: https://issues.apache.org/jira/browse/YARN-848
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Hitesh Shah
>            Assignee: Hitesh Shah
>         Attachments: YARN-848.1.patch, YARN-848.2.patch
> If the hostname is misconfigured to not be fully qualified ( i.e. hostname returns foo
and hostname -f returns foo.bar.xyz ), the NM ends up registering with the RM using only "foo".
This can create problems if DNS cannot resolve the hostname properly. 
> Furthermore, HDFS uses fully qualified hostnames which can end up affecting locality
matches when allocating containers based on block locations. 

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