Hi, I've been using NiFi 1.9.2 with an external ZooKeeper 3.4. After upgrading to NiFi 1.10.0 it appears that the external ZooKeeper needs to be updated to 3.5.5 per NIFI-6578 [1]. (I get lots of ZooKeeper-related errors in 1.10.0's log with 3.4 but 3.5.5 works fine.) I just wanted to verify this is correct and I'm not running into some other issue with NiFi 1.10.0 and ZooKeeper 3.4. I kind of expected the 3.5 client to be backward compatible with 3.4 but maybe it is not.
Thanks, Jeff [1] https://issues.apache.org/jira/browse/NIFI-6578
