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https://issues.apache.org/jira/browse/HADOOP-7499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13078484#comment-13078484
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Jeffrey Naisbitt commented on HADOOP-7499:
------------------------------------------

According to the java.net.URI javadocs, "No lookup of the host, if any, is 
performed..."  That is the main reason I chose java.net.URI over java.net.URL 
(even though there are definitely other reasons too).

> Add method for doing a sanity check on hostnames in NetUtils
> ------------------------------------------------------------
>
>                 Key: HADOOP-7499
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7499
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: util
>    Affects Versions: 0.23.0
>            Reporter: Jeffrey Naisbitt
>            Assignee: Jeffrey Naisbitt
>             Fix For: 0.23.0
>
>         Attachments: HADOOP-7499.patch
>
>
> As part of MAPREDUCE-2489, we need a method in NetUtils to do a sanity check 
> on hostnames

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