kevin-wu24 commented on code in PR #21122:
URL: https://github.com/apache/kafka/pull/21122#discussion_r2608471270
##########
server/src/main/java/org/apache/kafka/server/SimpleApiVersionManager.java:
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@@ -67,19 +69,19 @@ public ApiMessageType.ListenerType listenerType() {
@Override
public ApiVersionsResponse apiVersionResponse(int throttleTimeMs, boolean
alterFeatureLevel0) {
- FinalizedFeatures currentFeatures = features();
+ Optional<FinalizedFeatures> currentFeatures = featuresProvider.get();
return new ApiVersionsResponse.Builder()
.setThrottleTimeMs(throttleTimeMs)
.setApiVersions(apiVersions)
.setSupportedFeatures(brokerFeatures)
- .setFinalizedFeatures(currentFeatures.finalizedFeatures())
-
.setFinalizedFeaturesEpoch(currentFeatures.finalizedFeaturesEpoch())
+
.setFinalizedFeatures(currentFeatures.map(FinalizedFeatures::finalizedFeatures).orElse(Map.of()))
Review Comment:
Actually, if we pass the kraft.version information here, we can set the
finalized features field with the `kraft.version` here whenever
`currentFeatures.isEmpty()` (i.e.
`FeaturesPublisher#finalizedFeatures.isEmpty()`).
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