Github user zentol commented on the issue:
https://github.com/apache/flink/pull/5161
I'm wary about using the operator name (or _any_ variant that inexplicably
exists) as that significantly increases the size of watermarks.
I see the use-case, and ideally I would like to have both the operator name
and id to both have a unique metric by default while supporting static names
across jobs, but i don't see a way to do that without either a) blowing up
watermarks even more or b) including an index of all operators (id+name) in the
TDD and making that accessible.
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