Java Tech Workshop

Nov 4, 2026 · Backend Development

Kafka Rebalance Deep Dive: Eager vs Cooperative Protocols and Eliminating Partition Transfer Pauses

This article analyzes Kafka's consumer group rebalance mechanisms, comparing eager and cooperative protocols, explaining why partition transfers cause consumption pauses, detailing configuration parameters like session.timeout.ms and max.poll.interval.ms, and providing troubleshooting steps for lag spikes during rolling deployments.