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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11460) Deprecate shell vars
Date Tue, 20 Jan 2015 17:07:36 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14284027#comment-14284027
] 

Allen Wittenauer commented on HADOOP-11460:
-------------------------------------------

BTW, I'm debating merging this patch and HADOOP-11485 into one patch.


> Deprecate shell vars
> --------------------
>
>                 Key: HADOOP-11460
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11460
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: scripts
>    Affects Versions: 3.0.0
>            Reporter: Allen Wittenauer
>              Labels: scripts, shell
>         Attachments: HADOOP-11460-00.patch, HADOOP-11460-01.patch, HADOOP-11460-02.patch
>
>
> It is a very common shell pattern in 3.x to effectively replace sub-project specific
vars with generics.  We should have a function that does this replacement and provides a warning
to the end user that the old shell var is deprecated.  Additionally, we should use this shell
function to deprecate the shell vars that are holdovers already.



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