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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9227) FileSystemContractBaseTest doesn't test filesystem's mkdir/isDirectory() logic rigorously enough
Date Fri, 18 Jan 2013 20:00:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13557545#comment-13557545
] 

Colin Patrick McCabe commented on HADOOP-9227:
----------------------------------------------

Hi Steve,

Thanks for looking at this.  I agree that we should test even more things in these tests if
possible.

One thing to note: the s3 filesystems don't implement permissions, so testing umask there
would be quite impossible.
                
> FileSystemContractBaseTest doesn't test filesystem's mkdir/isDirectory() logic rigorously
enough
> ------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-9227
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9227
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 3.0.0
>            Reporter: Steve Loughran
>            Priority: Trivial
>
> The {{FileSystemContractBaseTest.mkdirs()}} asserts that a newly created directory is
true, but way of {{FileStatus.isFile()}}, but doesn't assert that the directory is a dir by
way of {{FileStatus.isDir()}}.
> The assertion used is slightly weaker, as the {{isFile()}} test is actually
> {{!isdir && !isSymlink()}}. if an implementation of {{FileSystem.mkdirs()}} created
symlinks then the test would still pass.
> There is one test that looks at the {{isDirectory()}} logic, {{testMkdirsWithUmask()}}
-but as that test is skipped for the s3 filesystems, it is possible for those filesystems
(or similar) to not have their directory creation logic stressed enough.
> The fix would be a trivial single line.

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