David Arthur created KAFKA-16446:
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Summary: Log slow controller events
Key: KAFKA-16446
URL: https://issues.apache.org/jira/browse/KAFKA-16446
Project: Kafka
Issue Type: Improvement
Reporter: David Arthur
Occasionally, we will see very high p99 controller event processing times.
Unless DEBUG logs are enabled, it is impossible to see which events are slow.
Typically this happens during controller startup/failover, though it can also
happen sporadically when the controller gets overloaded.
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