KIP-712 — Shallow Mirroring

Discussion MirrorMaker

Proposes a zero-copy MirrorMaker path that transfers raw record batches from source to destination broker without deserializing/re-serializing individual records ('shallow mirroring'). The current MirrorMaker pipeline copies bytes multiple times: from the network buffer into `ConsumerRecord`, then from `ConsumerRecord` into `ProducerRecord`, each requiring full deserialization and re-serialization of record batches.

Protocol Impact

Produce · Fetch

Details