Latency metrics can choke job-manager

With Flink 1.5.0 my Apache Beam job was not runnable unless I turned off latencyTracking feature. That job generated huge amount of latency metrics + histogram aggregates which updating occupied job-manager too much and cluster did fall appart.

This was discussed on mailing list:

http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/Flink-cluster-crashing-going-from-1-4-0-gt-1-5-3-td23941.html

The purpose of the ticket is reason about how to improve this and on which end. I am currently not sure what is the root cause:
a) Beam-To-Flink translation does generate too much of of "noise operators"
b) Flink does not handle latencyTracking well for large jobs