cmccabe commented on code in PR #13337:
URL: https://github.com/apache/kafka/pull/13337#discussion_r1130248758
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metadata/src/main/java/org/apache/kafka/image/publisher/MetadataPublisher.java:
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@@ -40,33 +40,30 @@ public interface MetadataPublisher extends AutoCloseable {
String name();
/**
- * Publish a new cluster metadata snapshot that we loaded.
+ * Handle a change in the current controller.
*
- * @param delta The delta between the previous state and the new one.
- * @param newImage The complete new state.
- * @param manifest The contents of what was published.
+ * @param newLeaderAndEpoch The new quorum leader and epoch. The new
leader will be
+ * OptionalInt.empty if there is currently no
active controller.
*/
- void publishSnapshot(
- MetadataDelta delta,
- MetadataImage newImage,
- SnapshotManifest manifest
- );
+ default void handleControllerChange(LeaderAndEpoch newLeaderAndEpoch) { }
Review Comment:
How about
`void onControllerChange(LeaderAndEpoch newLeaderAndEpoch)`
and
`void onMetadataUpdate(MetadataDelta delta, MetadataImage newImage,
LoaderManifest manifest);`?
Might be clearer.
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