Github user bowenli86 commented on the issue:
https://github.com/apache/flink/pull/4899
@StephanEwen @aljoscha Hi guys, I'm not sure if this is counted as a
feature or not (I guess so, because this PR adds a few new public APIs). If so,
it would be necessary to get this into master before 10/30, and can you please
take a look? Thanks!---
