mumrah commented on code in PR #12050:
URL: https://github.com/apache/kafka/pull/12050#discussion_r869631802
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metadata/src/main/java/org/apache/kafka/controller/FeatureControlManager.java:
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@@ -55,25 +60,37 @@ public class FeatureControlManager {
*/
private final TimelineHashMap<String, Short> finalizedVersions;
+ /**
+ * The current metadata version
+ */
+ private final TimelineObject<MetadataVersion> metadataVersion;
+
+ /**
+ * Collection of listeners for when features change
+ */
+ private final Map<String, FeatureLevelListener> listeners;
FeatureControlManager(LogContext logContext,
QuorumFeatures quorumFeatures,
SnapshotRegistry snapshotRegistry) {
this.log = logContext.logger(FeatureControlManager.class);
this.quorumFeatures = quorumFeatures;
this.finalizedVersions = new TimelineHashMap<>(snapshotRegistry, 0);
+ this.metadataVersion = new TimelineObject<>(snapshotRegistry,
MetadataVersion.UNINITIALIZED);
Review Comment:
UNINITIALIZED was added since we need a non-null object to initialize the
TimelineObject
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