[jira] [Resolved] (HADOOP-9227) FileSystemContractBaseTest doesn't test filesystem's mkdir/isDirectory() logic rigorously enough

["Steve Loughran (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-9227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran resolved HADOOP-9227.
------------------------------------

       Resolution: Fixed
    Fix Version/s: 3.0.0
         Assignee: Steve Loughran
     Release Note: fixed in HADOOP-9258
    
> 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
>            Assignee: Steve Loughran
>            Priority: Trivial
>             Fix For: 3.0.0
>
>
> 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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