Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/2345
+1 for this
There seems to be an issue with the RocksDB backup engine, to we should
probably discourage that mode even in current releases.
I would also remove the `HDFSCopyFromLocal` and `HDFSCopyToLocal` utils. We
should not have dead code in the repository and we can always re-add them from
the git history if needed.
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