Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/2970
I've update this PR @StephanEwen. Unfortunately, I couldn't use Hadoop's
`FileSystem#getContentSummary` because it will first request the status for the
given path, then list all files and directories if the path is a directory. For
each file it will aggregate the `FileStatus` and then recursively descend into
each directory. Thus, I think that this method is not faster.
I've refactored the code to contain a method `FileUtils#deletePathIfEmpty`
to delete the path if it does not contain any files/directories.
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