[ZOOKEEPER-2319] UnresolvedAddressException cause the QuorumCnxManager.Listener exit

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.6
• Fix Version/s: 3.4.7, 3.5.0, 3.6.0
• Labels: pull-request-available
• Assignee: Michael Han
• Reporter: Zhaohui Yu
• Created: 09/Nov/15 23:36
• Updated: 05/Jul/18 11:18
• Resolved: 18/Jun/18 04:05

Description

Given three nodes, the leader on 2, but some issue with this machine, so I shutdown this machine, and change the host name to another machine.
Then I start the node in the new machine, but the new node can not join.
I found the the 1 and 3's Listener thread exit.

With the code of Listener's run method:
I think we should catch UnresolvedAddressException to avoid the Listener exit.

@Override
        public void run() {
           
            while((!shutdown) && (numRetries < 3)){
                try {
                   // bind and accept
                        receiveConnection(client);
                  
                } catch (IOException e) {
                    
                }
            }
            //
        }

Issue Links

• Is contained by: ZOOKEEPER-1506 Re-try DNS hostname -> IP resolution if node connection fails
• links to: GitHub Pull Request #348