KIP-219 — Improve quota communication

Accepted Kafka 2.0 BrokerAdmin

KIP-219 changes Kafka's quota enforcement to send a throttle notification header in the response that tells the client how long it will be throttled, rather than delaying the response itself. Delaying the response ties up broker I/O threads for the throttle duration and causes producer `max.block.ms` timeouts when throttle times are long, since the producer cannot distinguish a throttled response from a network failure.

Protocol Impact

Produce · Fetch

Details