mjsax commented on code in PR #21580:
URL: https://github.com/apache/kafka/pull/21580#discussion_r2887431348


##########
streams/src/main/java/org/apache/kafka/streams/kstream/internals/KStreamSlidingWindowAggregate.java:
##########
@@ -358,8 +359,8 @@ private void processEarly(final Record<KIn, VIn> record, 
final long windowCloseT
 
             if (combinedWindow == null) {
                 final TimeWindow window = new TimeWindow(0, 
windows.timeDifferenceMs());
-                final ValueAndTimestamp<VAgg> valueAndTime = 
ValueAndTimestamp.make(initializer.apply(), record.timestamp());
-                updateWindowAndForward(window, valueAndTime, record, 
windowCloseTime);
+                final ValueTimestampHeaders<VAgg> valueTimestampHeaders = 
ValueTimestampHeaders.make(initializer.apply(), record.timestamp(), 
record.headers());

Review Comment:
   `new RecordHeaders()` ?



##########
streams/src/main/java/org/apache/kafka/streams/kstream/internals/KStreamSlidingWindowAggregate.java:
##########
@@ -386,14 +387,14 @@ private void createWindows(final Record<KIn, VIn> record,
 
             // create left window for new record
             if (!leftWinAlreadyCreated) {
-                final ValueAndTimestamp<VAgg> valueAndTime;
+                final ValueTimestampHeaders<VAgg> valueTimestampHeaders;
                 if (leftWindowNotEmpty(previousRecordTimestamp, 
record.timestamp())) {
-                    valueAndTime = ValueAndTimestamp.make(leftWinAgg.value(), 
record.timestamp());
+                    valueTimestampHeaders = 
ValueTimestampHeaders.make(leftWinAgg.value(), record.timestamp(), 
record.headers());

Review Comment:
   `new RecordHeaders()` ?



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