KIP-923 — Add A Grace Period to Stream Table Join

Accepted Kafka 3.7 Streams

Adds a gracePeriod parameter to Joined to buffer stream-side records in a stream-table join, allowing them to match the correct versioned table entry rather than the latest value at arrival time. Without buffering, stream records that arrive slightly before a table update join with the previous version, producing incorrect results even when a versioned table is used.

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