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Compatibility, Deprecation, and Migration Plan

This is a server-client integrated change, and it's required to upgrade the broker first with `inter.broker.protocol.version` to the latest. Any produce request with higher version will automatically get fenced, because we will be losing transaction status tracking once we switched coordinator location. 

Rejected Alternatives

• Producer Pooling:
• Producer support multiple transactional ids:
• Tricky rebalance synchronization:

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