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https://issues.apache.org/jira/browse/HADOOP-7314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13067118#comment-13067118
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Jeffrey Naisbitt commented on HADOOP-7314:
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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: 0.20.205.0, 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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