KIP-280 — Enhanced log compaction

Accepted Broker

KIP-280 enhances log compaction to support a client-side ordering guarantee: records produced with a sequence number are compacted respecting producer order, not just offset order, preventing a compacted log from presenting a consumer with a state that never existed on the producer. Current compaction is based purely on broker-assigned offsets, which can produce semantically incorrect state for producers that send causally ordered updates.

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