Hello Kafka Users and Developers, For KAFKA-19652 - Consumer throughput drops by 10 times with Kafka v3.9.0 in ZK mode
I wanted to understand if this is a known issue or an isolated edge case. It was reported back in August 2025 and subsequently confirmed by 2 other people, able to reproduce the throughput drop. Although nothing specifically identifying as a blocker for upgrades to this version or later. Having min.insync.replicas=2 I guess is fairly common, so this would affect many installations. Thanks, Mark
