ableegoldman commented on a change in pull request #9157:
URL: https://github.com/apache/kafka/pull/9157#discussion_r478758779
##########
File path:
streams/src/main/java/org/apache/kafka/streams/kstream/internals/KStreamSlidingWindowAggregate.java
##########
@@ -160,11 +160,18 @@ public void processInOrder(final K key, final V value,
final long timestamp) {
if (endTime < timestamp) {
leftWinAgg = next.value;
+ // store the combined window if it is found so that a
right window can be created for
+ // the combined window's max record, as needed
if (isLeftWindow(next) || endTime ==
windows.timeDifferenceMs()) {
latestLeftTypeWindow = next;
}
} else if (endTime == timestamp) {
leftWinAlreadyCreated = true;
+ // if current record's left window is the combined
window, need to check later if there is a
+ // record that needs a right window within the
combined window
+ if (endTime == windows.timeDifferenceMs()) {
+ latestLeftTypeWindow = next;
+ }
Review comment:
Yeah sorry I didn't mean that we shouldn't have any conditionals here
whatsoever, I just meant that we don't need the combined window check (or
really anything other than what we need to accurately set
`previousRecordTimestamp`)
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