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  • an UNSUPPORTED_VERSION  error if the cluster's MetadataVersion does not support UnregisterControllerRecord 
  • a CONTROLLER_ID_NOT_REGISTERED  error if no registration exists for the requested controller ID. This is similar to the BROKER_ID_NOT_REGISTERED error in the case of brokers.
  • a NOT_CONTROLLER  error if the request does not arrive at the active controller
  • a INVALID_REQUEST error if the request arrives at the active controller. This is known to be a "mistaken" request, as it is expected controllers are not running when they are unregistered. See the User Experience for more details.

UnregisterControllerResponse

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