FrankYang0529 opened a new pull request, #19040:
URL: https://github.com/apache/kafka/pull/19040
The `FeatureControlManager` used `MetadataVersion#LATEST_PRODUCTION`
as uninitialized MV. This makes other component may get a stale MV.
In production code, the `FeatureControlManager` set MV when replaying
`FeatureLevelRecord`, so we can set `Optional.empty()` as uninitialized MV.
If other components get an empty result, the `FeatureLevelRecord` throws
an exception like `FeaturesImage`.
Unit test:
* FeatureControlManagerTest#testMetadataVersion: test getting MetadataVersion
before and after replaying FeatureLevelRecord.
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