Github user yanghua commented on the issue:
https://github.com/apache/flink/pull/5448
@StephanEwen for the open question, this PR's implementation has used some
new key and deprecated the old key, such as `jobmanager.heap.mb ->
jobmanager.heap.size` , `taskmanager.heap.mb -> taskmanager.heap.size`, the
problem is how to deal with `taskmanager.memory.segment-size` and
`taskmanager.memory.size` which contains the keyword `size` is not suitable to
be replaced by a new key.---
