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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