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https://issues.apache.org/jira/browse/HADOOP-10446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13951467#comment-13951467
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Colin Patrick McCabe commented on HADOOP-10446:
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That's a good point.  The YARN native client may need the ability to write out 
the config at some point.  It's still not clear to me whether we need that for 
YARN (as opposed to MR1)-- perhaps a YARN expert could comment.  In either 
case, I don't think we need to do it right away in this JIRA.  We can have 
another JIRA for writing the config back out.

> native code for reading Hadoop configuration XML files
> ------------------------------------------------------
>
>                 Key: HADOOP-10446
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10446
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Colin Patrick McCabe
>
> We need to have a way to read Hadoop configuration XML files in the native 
> HDFS and YARN clients.  This will allow those clients to discover the 
> locations of NameNodes, YARN daemons, and other configuration settings, etc. 
> etc.



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