Hi, Kafka currently builds against Zookeeper 3.3.4, which is quite old.
Perhaps we should move to the more recent 3.4.x branch? I tested the change on my system and the only impact is to EmbeddedZookeeper used in tests (it uses NIOServerCnxn.factory, which was refactored into its own class in 3.4). Here's what the change looks like: https://gist.github.com/gwenshap/d95b36e0bced53cab5bb Gwen
