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As part of KIP-584, brokers expose a range of supported versions for each feature. For example, metadata.version might be supported from 1 to 21. (Note that feature level ranges are always inclusive, so this would include both level 1 and 21.)

These supported ranges are supposed to be able to include 0. The 0 version has two meanings, one is that this feature isn’t completed and another is to disable this feature. For example, it should be possible for a broker to support a kraft.version of [0, 1]. However, in older software versions, there is an assertion in org.apache.kafka.common.feature.SupportedVersionRange that prevents this. This causes problems when the older software attempts to deserialize an ApiVersionsResponse containing such a range.

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