KIP-347 — Enable batching in FindCoordinatorRequest

Discussion Kafka 3.0 ConsumerProtocol

KIP-347 extends the `FindCoordinatorRequest` to accept a batch of coordinator keys (group IDs or transaction IDs) in a single request instead of one per RPC. Sending N individual `FindCoordinatorRequests` for N consumer groups is wasteful and adds latency, particularly for admin operations like `describeConsumerGroups` and `deleteConsumerGroups` that must resolve coordinators for many groups.

Protocol Impact

FindCoordinator

Details