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https://issues.apache.org/jira/browse/HADOOP-11509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296677#comment-14296677
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Steve Loughran commented on HADOOP-11509:
-----------------------------------------
UGI and Config setup are irreversible. Once UGI has set itself up, you are
stuck with the singleton. As for Configurations, give it an invalid XML
document as a base resource and there goes Hadoop
> change parsing sequence in GenericOptionsParser to parse -D parameters first
> ----------------------------------------------------------------------------
>
> Key: HADOOP-11509
> URL: https://issues.apache.org/jira/browse/HADOOP-11509
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Xuan Gong
> Assignee: Xuan Gong
> Fix For: 2.7.0
>
> Attachments: HADOOP-11509.1.patch, HADOOP-11509.2.patch
>
>
> In GenericOptionsParser, we need to parse -D parameter first. In that case,
> the user input parameter (through -D) can be set into configuration object
> earlier and used to process other parameters.
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