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From "Jeffrey Naisbitt (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7314) Add support for throwing UnknownHostException when a host doesn't resolve
Date Mon, 18 Jul 2011 17:18:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13067153#comment-13067153
] 

Jeffrey Naisbitt commented on HADOOP-7314:
------------------------------------------

test-patch results for the 0.20s patch:
     [exec] +1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 6 new or modified tests.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9)
warnings.
     [exec] 


> Add support for throwing UnknownHostException when a host doesn't resolve
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-7314
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7314
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 0.20.205.0, 0.23.0
>            Reporter: Jeffrey Naisbitt
>            Assignee: Jeffrey Naisbitt
>             Fix For: 0.23.0
>
>         Attachments: HADOOP-7314-0.20s.patch, HADOOP-7314-v2.patch, HADOOP-7314-v3.patch,
HADOOP-7314.patch
>
>
> As part of MAPREDUCE-2489, we need support for having the resolve methods (for DNS mapping)
throw UnknownHostExceptions.  (Currently, they hide the exception).  Since the existing 'resolve'
method is ultimately used by several other locations/components, I propose we add a new 'resolveValidHosts'
method.

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