Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/2874
The PR changes several `@Public` and `@PublicEvolving` methods.
We do not touch @Public interfaces for 1.x releases and also try to avoid
to modify `@PublicEvolving` interface except for very good reasons. We have a
Maven plugin that prevents changes that break the binary compatibility of
methods and classes annotated with `@Public`.
By building the code before opening a pull request, you can early detect
such issues.
I don't think that we can and should merge this PR.
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