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• UNSAFE_FEATURE_DOWNGRADE: indicates that a requested feature level downgrade cannot safely be performed  

KIP-584 CLI Addendum

Re-structure the kafka-features.sh tool to provide functions described by the "Basic" and "Advanced" CLI usages as sub-commands. 

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Send an UpdateFeaturesRequest to the controller to disable the given feature FEATURE.

KIP-584 Finalized Version Addendum

Remove the concept of a minimum finalized version from feature flags. The supported version will continue to be a min/max range, but the finalized version will simply be the version specified by the operator using kafka-features.sh. This simplifies the KRaft upgrade and downgrade process by eliminating confusion about the meaning of a minimum finalized metadata.version. 

New kafka-storage argument

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