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https://issues.apache.org/jira/browse/HADOOP-11509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14299035#comment-14299035
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Chris Nauroth commented on HADOOP-11509:
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I have filed HADOOP-11528 to improve the documentation to discuss the
precedence rules for generic command line options.
Has anyone found a concrete example of a backwards-compatibility problem, or
has this discussion been addressed adequately? Please comment if there are
still concerns. Otherwise, I'm going to move on from this jira.
Thanks!
> 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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