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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11509) change parsing sequence in GenericOptionsParser to parse -D parameters first
Date Fri, 30 Jan 2015 18:46:35 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14299035#comment-14299035
] 

Chris Nauroth commented on HADOOP-11509:
----------------------------------------

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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