kowshik commented on a change in pull request #8680:
URL: https://github.com/apache/kafka/pull/8680#discussion_r427827018
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File path: core/src/main/scala/kafka/server/FinalizedFeatureCache.scala
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@@ -0,0 +1,93 @@
+package kafka.server
+
+import kafka.utils.Logging
+import org.apache.kafka.common.feature.{Features, VersionLevelRange}
+
+// Raised whenever there was an error in updating the FinalizedFeatureCache
with features.
Review comment:
As we discussed offline today, this exception is already handled in
`ChangeNotificationProcessorThread.doWork()` method defined in
`FinalizedFeatureChangeListener.scala`. Basically, the ZK change notification
processor thread exits the Broker with a fatal error (non-zero exit code) when
this exception (or any exception) is caught while trying to update
`FinalizedFeatureCache`.
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