cadonna commented on code in PR #13855: URL: https://github.com/apache/kafka/pull/13855#discussion_r1235096344
########## streams/src/main/java/org/apache/kafka/streams/kstream/internals/KStreamImpl.java: ########## @@ -1256,10 +1261,25 @@ private <VO, VR> KStream<K, VR> doStreamTableJoin(final KTable<K, VO> table, final NamedInternal renamed = new NamedInternal(joinedInternal.name()); final String name = renamed.orElseGenerateWithPrefix(builder, leftJoin ? LEFTJOIN_NAME : JOIN_NAME); + + Optional<TimeOrderedKeyValueBuffer<K, V, V>> buffer = Optional.empty(); + + if (joined.gracePeriod() != null) { Review Comment: > So if someone set the grace period to zero then we can evict everything from the buffer even after the grace period is changed. Are you saying that if I set the grace period > 0 and I run my application, then I stop my application and set the grace period == 0, and restart my application, my application will process records from my first run? Why should removing the grace period (grace period == null) behave differently? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org