KIP-1099 — Extend kafka-consumer-groups command line tool to support new consumer group

Accepted Kafka 4.0 ConsumerAdmin

Extends ConsumerGroupDescription with optional groupEpoch and targetAssignmentEpoch fields, MemberDescription with memberEpoch and upgraded fields, and ShareGroupDescription with groupEpoch and targetAssignmentEpoch, surfacing these in kafka-consumer-groups.sh and kafka-share-groups.sh. The new consumer group protocol (KIP-848) introduced epoch-based assignment tracking but the admin tooling had no visibility into group or member epochs.

Protocol Impact

ConsumerGroupDescribe v1

Details