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https://issues.apache.org/jira/browse/HDFS-4237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13560236#comment-13560236
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Andy Isaacson commented on HDFS-4237:
-------------------------------------

bq. BTW, what do you use to catch these spaces?

I open the patch file in less and search for space.  Less highlights matches by 
default.  There are many similar tools; vim has a diff mode that can highlight 
bad whitespace, ReviewBoard turns it bright red, several Git GUI tools such as 
gitk will call it out, it's easy to write a git commit hook that refuses to 
allow a commit with bad whitespace.
                
> Add unit tests for HTTP-based filesystems against secure MiniDFSCluster
> -----------------------------------------------------------------------
>
>                 Key: HDFS-4237
>                 URL: https://issues.apache.org/jira/browse/HDFS-4237
>             Project: Hadoop HDFS
>          Issue Type: Test
>          Components: security, test, webhdfs
>    Affects Versions: 2.0.0-alpha
>            Reporter: Stephen Chu
>            Assignee: Stephen Chu
>         Attachments: HDFS-4237.patch.001, HDFS-4237.patch.007, 
> HDFS-4237.patch.008
>
>
> Now that we can start a secure MiniDFSCluster (HADOOP-9004), we need more 
> security unit tests.
> A good area to add secure tests is the HTTP-based filesystems (WebHDFS, 
> HttpFs).

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