Affects Version/s: 3.4.5
Fix Version/s: None
Component/s: java client
Amazon EC2. Linux.
We use Amazon Elastic IP for zookeeper hosts so that the zookeeper hosts have the same IP address after a restart.
The issue is, if one host is down then we cannot connect to the other hosts.
Here is an example connect string:
"ec2-1-2-3-4.compute-1.amazonaws.com, ec2-4-3-2-1.compute-1.amazonaws.com, ec2-5-5-5-5.compute-1.amazonaws.com"
If all three hosts are up, we can connect. If one host is down, then we cannot create a Zookeeper instance due to an UnknownHost exception, even though the other servers in the connect string are valid.