ableegoldman commented on a change in pull request #11857: URL: https://github.com/apache/kafka/pull/11857#discussion_r821100612
########## File path: streams/src/main/java/org/apache/kafka/streams/processor/internals/TopologyMetadata.java ########## @@ -161,35 +161,47 @@ public void registerThread(final String threadName) { public void unregisterThread(final String threadName) { threadVersions.remove(threadName); - maybeNotifyTopologyVersionWaitersAndUpdateThreadsTopologyVersion(threadName); + maybeNotifyTopologyVersionListeners(); } public TaskExecutionMetadata taskExecutionMetadata() { return taskExecutionMetadata; } - public void maybeNotifyTopologyVersionWaitersAndUpdateThreadsTopologyVersion(final String threadName) { + public Set<String> updateThreadTopologyVersion(final String threadName) { try { - lock(); - final Iterator<TopologyVersionWaiters> iterator = version.activeTopologyWaiters.listIterator(); - TopologyVersionWaiters topologyVersionWaiters; + version.topologyLock.lock(); threadVersions.put(threadName, topologyVersion()); + return namedTopologiesView(); + } finally { + version.topologyLock.unlock(); + } + } + + public void maybeNotifyTopologyVersionListeners() { + try { + lock(); + final long minThreadVersion = getMinimumThreadVersion(); + final Iterator<TopologyVersionListener> iterator = version.activeTopologyUpdateListeners.listIterator(); + TopologyVersionListener topologyVersionListener; while (iterator.hasNext()) { - topologyVersionWaiters = iterator.next(); - final long topologyVersionWaitersVersion = topologyVersionWaiters.topologyVersion; - if (topologyVersionWaitersVersion <= threadVersions.get(threadName)) { - if (threadVersions.values().stream().allMatch(t -> t >= topologyVersionWaitersVersion)) { - topologyVersionWaiters.future.complete(null); - iterator.remove(); - log.info("All threads are now on topology version {}", topologyVersionWaiters.topologyVersion); - } + topologyVersionListener = iterator.next(); + final long topologyVersionWaitersVersion = topologyVersionListener.topologyVersion; + if (minThreadVersion >= topologyVersionWaitersVersion) { Review comment: Yeah I think this was already resolved but just to clarify for anyone else reading this/ourselves in the future, yes, the listeners are for the callers of add/removeNamedTopology 👍 -- 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