Hi ZK users / devs, ZooKeeper branch-3.4 is still on Netty 3 which is not maintained by the Netty team anymore. There’s no intention of updating it on our side, hence we’re planning to remove it from the codebase completely and ask existing users to upgrade to 3.5, if they still want to use Netty. 3.5 is a much better option anyway in various aspects: Netty 4 performs better, TLS support in both quorum and client communication, etc.
The default stack in 3.4 is NIO, so our gut feeling is that the impact on our existing users is low, however the most important effect of this change is probably the loss of encrypted client connections. Please share your thoughts about this change and let us know if upgrading to 3.5 is not possible in your use case. Tracking Jira: https://issues.apache.org/jira/browse/ZOOKEEPER-3568 Regards, Andor
