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https://issues.apache.org/jira/browse/HADOOP-10854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14641271#comment-14641271
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Allen Wittenauer commented on HADOOP-10854:
-------------------------------------------

I think it's a problem because the people who will need unit testing the most 
are most likely the ones who won't have it installed.  I mean, even simple 
things like "hey, keep the case statements alphabetized" has been an uphill 
battle.  Manipulating global vars is downright dangerous for most of Hadoop's 
committers.

> unit tests for the shell scripts
> --------------------------------
>
>                 Key: HADOOP-10854
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10854
>             Project: Hadoop Common
>          Issue Type: Test
>          Components: scripts
>    Affects Versions: 3.0.0
>            Reporter: Allen Wittenauer
>            Assignee: Allen Wittenauer
>              Labels: scripts
>         Attachments: HADOOP-10854.00.patch, HADOOP-10854.01.patch, 
> HADOOP-10854.02.patch, HADOOP-10854.03.patch, HADOOP-10854.04.patch
>
>
> With HADOOP-9902 moving a lot of the core functionality to functions, we 
> should build some unit tests for them.



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