lihaosky commented on code in PR #14426:
URL: https://github.com/apache/kafka/pull/14426#discussion_r1374947218


##########
streams/src/main/java/org/apache/kafka/streams/kstream/internals/KStreamKStreamJoin.java:
##########
@@ -228,7 +231,7 @@ private void emitNonJoinedOuterRecords(
                     sharedTimeTracker.minTime = timestamp;
 
                     // Skip next records if window has not closed
-                    if (timestamp + joinAfterMs + joinGraceMs >= 
sharedTimeTracker.streamTime) {
+                    if (sharedTimeTracker.minTime + windowsAfterIntervalMs  + 
joinGraceMs >= sharedTimeTracker.streamTime) {

Review Comment:
   I'm not sure about this part. If the `value` has right value and this is on 
right side, why don't we check with `windows.beforeMs` to see if it expires? 
Not sure why `windowsAfterIntervalMs` is always set to `windows.afterMs`.



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