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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 16:28:57 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13067118#comment-13067118

Jeffrey Naisbitt commented on HADOOP-7314:

After that comment, I was asked to separate the patch from MAPREDUCE-2489 so that the code
reviewed here was all in one place.  So, the HADOOP-7314-0.20s.patch file is in fact for the
0.20s branch.

Sorry about the confusion.  I tried to clear it up with these comments above (https://issues.apache.org/jira/browse/HADOOP-7314?focusedCommentId=13065421&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13065421
and https://issues.apache.org/jira/browse/HADOOP-7314?focusedCommentId=13065422&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13065422),
but I'm guessing it got lost in the jumble of messages and updates.

Thanks for looking at this!

> 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:, 0.23.0
>            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,
> 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'

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