Phuc-Hong-Tran commented on code in PR #15585: URL: https://github.com/apache/kafka/pull/15585#discussion_r1540156766
########## clients/src/main/java/org/apache/kafka/clients/consumer/internals/AsyncKafkaConsumer.java: ########## @@ -1750,8 +1753,14 @@ private void subscribeInternal(Pattern pattern, Optional<ConsumerRebalanceListen throwIfNoAssignorsConfigured(); log.info("Subscribed to pattern: '{}'", pattern); subscriptions.subscribe(pattern, listener); - updatePatternSubscription(metadata.fetch()); metadata.requestUpdateForNewTopics(); + Cluster cache = metadata.fetch(); + + while (cache == metadata.fetch()) { + log.info("Waiting for new metadata update"); + } Review Comment: @lianetm, I agree with the flow you suggested, however I'm not sure how can we confirm the fact that new topic(s) has been discovered after the `requestUpdateForNewTopics` -- 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