Steve Loughran updated HADOOP-14124:
    Issue Type: Sub-task  (was: Bug)
        Parent: HADOOP-15220

> S3AFileSystem silently deletes "fake" directories when writing a file.
> ----------------------------------------------------------------------
>                 Key: HADOOP-14124
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14124
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs, fs/s3
>    Affects Versions: 2.6.0
>            Reporter: Joel Baranick
>            Priority: Major
>              Labels: filesystem, s3
> I realize that you guys probably have a good reason for {{S3AFileSystem}} to 
> cleanup "fake" folders when a file is written to S3.  That said, that fact 
> that it silently does this feels like a separation of concerns issue.  It 
> also leads to weird behavior issues where calls to 
> {{AmazonS3Client.getObjectMetadata}} for folders work before calling 
> {{S3AFileSystem.create}} but not after.  Also, there seems to be no mention 
> in the javadoc that the {{deleteUnnecessaryFakeDirectories}} method is 
> automatically invoked. Lastly, it seems like the goal of {{FileSystem}} 
> should be to ensure that code built on top of it is portable to different 
> implementations.  This behavior is an example of a case where this can break 
> down.

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