KIP-461 — Improve Replica Fetcher behavior at handling partition failure

Accepted Kafka 2.3 Broker

Changes the replica fetcher thread to isolate partition-level errors so that a fetch failure for one partition only removes that partition from tracking, allowing the thread to continue fetching all other healthy partitions. Currently, an unrecoverable exception in one partition causes the entire replica fetcher thread to terminate, leaving all other partitions it was serving to become under-replicated.

Protocol Impact

StopReplica

Details