THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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There will be a new error code, INVALID_CLUSTER_ID, that the controller will return if the broker tries to register with the wrong cluster ID.
BROKER_REQUIRED_FOR_PARTITIONS
The BROKER_REQUIRED_FOR_PARTITIONS is returned by DecommissionBrokerRequest if the broker is the last replica for certain partitions, and force was not specified.
RPCs
Obsoleting the Metadata Propagation RPCs
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