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Motivation

This KIP is following on KIP-429 to improve Streams scaling out behavior. While KIP-429 is focused on decreasing the amount of time that progress is blocked on the rebalance itself, this KIP addresses a second phase of stoppage that happens today: upon receiving assignment of a stateful task, Streams has to catch it up to the head of its changelog before beginning to process it.

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If you want to know more about details on protocol level, feel free to checkout KIP-429.

Constraints and Cost Function

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