guozhangwang commented on code in PR #12135:
URL: https://github.com/apache/kafka/pull/12135#discussion_r872901962


##########
streams/src/main/java/org/apache/kafka/streams/kstream/internals/KStreamWindowAggregate.java:
##########
@@ -103,59 +89,12 @@ public void enableSendingOldValues() {
         sendOldValues = true;
     }
 
-
-    private class KStreamWindowAggregateProcessor extends 
ContextualProcessor<KIn, VIn, Windowed<KIn>, Change<VAgg>> {
-        private TimestampedWindowStore<KIn, VAgg> windowStore;
-        private TimestampedTupleForwarder<Windowed<KIn>, VAgg> tupleForwarder;
-        private Sensor droppedRecordsSensor;
-        private Sensor emittedRecordsSensor;
-        private Sensor emitFinalLatencySensor;
+    private class KStreamWindowAggregateProcessor extends 
AbstractKStreamTimeWindowAggregateProcessor<KIn, VIn, VAgg> {
         private long observedStreamTime = ConsumerRecord.NO_TIMESTAMP;

Review Comment:
   Ack!



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