Github user tweise commented on the issue:
https://github.com/apache/flink/pull/5992
Looks like we can either leave all the application facing constants as they
are (which might look a bit strange given they refer to old API and we are now
using the new), or we deprecate and duplicate :) If the latter, then I would
suggest to map from old/deprecated to new property keys in a single place and
issue deprecation warning.---
