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From "Joel Baranick (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-14124) S3AFileSystem silently deletes "fake" directories when writing a file.
Date Mon, 27 Feb 2017 06:01:45 GMT
Joel Baranick created HADOOP-14124:
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             Summary: 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: Bug
    Affects Versions: 2.6.0
            Reporter: Joel Baranick


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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