At those many topics, zookeeper will be the main bottleneck. Leader election process will take very long increasing the unavailability window of the cluster.
Thanks, Neha On Nov 13, 2013 4:49 AM, "Joe Freeman" <joe.free...@bitroot.com> wrote: > Would I be correct in assuming that a Kafka cluster won't scale well to > support lots (tens of millions) of topics? If I understand correctly, a > node being added or removed would involve a leader election for each topic, > which is a relatively expensive operation? >