The producer- clientid metrics are displaying in Jconsole.
But not displaying in APM (Wily).
JConsole / MBean tab:
APM Investigator :
Per Engineering, Kafka extension currently does not support any composite/double rate metrics.
Release : 20.6
Component : APMIA 20.6
Kafka Extension
Submit an enhancement request DX APM Communities and under "Ideation"