Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/5448
Will try and take a look at this soon... Sorry for the delay.
What I would consider very important is that users who don't change their
configuration do not get different behavior all of a sudden. Meaning in the
absence of a "unit" we do not always interpret the value as a "byte" but as
whatever the config value was measured in before (such as MBs, ...).---
