Hi, All We found a critical problem that will cause the pulsar cluster to part “deaf” status. the broker can’t receive zookeeper session notification to revalidate namespace bundle ownership and leader election. That means it will cause one topic may have two owner brokers, and the leader election problem. etc
Blast radius: Since this problem was introduced by https://github.com/apache/pulsar/pull/17401. The releases as follows may affect: 2.8.5 2.9.4 2.10.3 2.11.0 Workaround: Restart broker The fix is over here: https://github.com/apache/pulsar/pull/19754 We can avoid upgrading to the above version and wait for the latest progress. I will continue to push for a solution to this problem. Please correct me if I got something wrong. thanks! Best, Mattison
