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  1. Add min.api.version configuration in Kafka broker
  2. Allow dynamic update of min.api.version configuration
  3. Reject the API requests of older versions. The broker will return an UNSUPPORTED_VERSION error. 


Compatibility, Deprecation, and Migration Plan

  • What impact (if any) will there be on existing users?
    No impact to the users that are not using user-defined authorizer. For the users that are using user-defined authorizer, they will have to modify their authorizer code to use the new interface.By default, all the existing client libraries are allowed. 

Rejected Alternatives

Alternative 1 - Provide api versions to authorizer

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