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1. We fallback to using alterConfigs automatically if incrementalAlterConfigs is not supported. We need to unify the semantics if we want to do this heuristically, so we choose to give this privilege to users by adding --disable-incremental.
2. we keep existing scripts unchanged make incrementalAlterConfigs the default way and add an a "--enabledisable-incremental" flag for new old servers in before Kafka 3.X, and remove it in Kafka 4.X. In this way we move the We are inclined to do move this incompatible process to 4.X, I'm inclined to do it as soon as possible since it's inevitable.
3. We just forward all invocations of alterConfigs to incrementalAlterConfigs. Similar to first one, we need to unify the semantics, it's not recommend since alterConfigs is deprecated and we just leave it as it was.

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