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Compatibility, Deprecation, and Migration Plan

Behavior break

 floor  Floor raised from `0` to `200` '0' to '200' -- any cluster currently configured with share.coordinator.snapshot.update.records.per.snapshot set to a value below 200 will fail broker startup config validation after upgrade. Clusters using the default 500 or any value in [200, 500] are unaffected. Clusters that previously set the value to anything between 501 and 1000 — not currently possible since the existing range is [0, 500] — would also pass validation in the new range; this case does not apply on upgrade.

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• Values 0–199: fail to start after upgrade (operator must fix)
• Values 200–500: unaffected
•  Values 501+: don't exist (can't happen)

Behavioral compatibility

(ceiling raise): Ceiling raise -- raising the ceiling from 500 to 1000 is non-breaking on its own. Brokers that retain their existing setting in [200, 500] behave identically to today. Operators can opt into the higher range explicitly.

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