Hello kafka devs, I would like to start a vote on KIP-771. This KIP proposes to not expose controller metrics on KRaft brokers since KRaft brokers are not controller eligible and will never have a non-zero value for the metric. Since exposing metrics that will always be zero is both unneeded and causes non-negligible performance impact it would be best to not move forward with KAFKA-13140: https://github.com/apache/kafka/pull/11133 and instead accept this KIP.
Here is a link to the KIP which documents the behavior change from how controller metrics are exposed in a Kafka cluster using Zookeeper to how they are exposed in a Kafka cluster using KRaft. : https://cwiki.apache.org/confluence/display/KAFKA/KIP+771%3A+KRaft+brokers+should+not+expose+controller+metrics Here is a link to the discussion: https://lists.apache.org/thread.html/r74432034527fab13cc973ad5187ef5881a642500d77b0d275dd7f018%40%3Cdev.kafka.apache.org%3E Regards, Ryan Dielhenn
