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Deprecating a feature version is an incompatible change, which requires a major release of Kafka.  Sometimes there can be a need for this Kafka (see Non-goals section). This requirement translates to increasing the cluster-wide finalized minimum version level of one or more features in the ZK '/features' node. It is important to note that the minimum version level can not be mutated via the Controller API. This is because, the minimum version level is usually increased only to indicate the intent to stop support for a certain feature version. We would usually deprecate features during broker releases, after prior announcements. Therefore, this is not a dynamic operation, and such a mutation is not supported through the ApiKeys.UPDATE_FEATURES controller API.

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