maoling created ZOOKEEPER-3800:
----------------------------------

             Summary: improve the log printing the address when 
QuorumCnxManager#ListenerHandler's port binds 
                 Key: ZOOKEEPER-3800
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3800
             Project: ZooKeeper
          Issue Type: Improvement
            Reporter: maoling
             Fix For: 3.7.0


 

1.
{code:java}
LOG.error("Exception while listening", e);{code}
 

At least, the log should print the address to help me find what port has 
conflicted in my host

2. The stack trace is following:

 
{code:java}
2020-04-17 18:49:24,757 [myid:1] - INFO  [main:ZKAuditProvider@42] - ZooKeeper 
audit is disabled.
2020-04-17 18:49:24,758 [myid:1] - ERROR 
[ListenerHandler-/127.0.0.1:3888:QuorumCnxManager$Listener$ListenerHandler@1093]
 - Exception while listening
java.net.BindException: Address already in use (Bind failed)
        at java.net.PlainSocketImpl.socketBind(Native Method)
        at 
java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:387)
        at java.net.ServerSocket.bind(ServerSocket.java:375)
        at java.net.ServerSocket.bind(ServerSocket.java:329)
        at 
org.apache.zookeeper.server.quorum.QuorumCnxManager$Listener$ListenerHandler.createNewServerSocket(QuorumCnxManager.java:1134)
        at 
org.apache.zookeeper.server.quorum.QuorumCnxManager$Listener$ListenerHandler.acceptConnections(QuorumCnxManager.java:1064)
        at 
org.apache.zookeeper.server.quorum.QuorumCnxManager$Listener$ListenerHandler.run(QuorumCnxManager.java:1033)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
2020-04-17 18:49:24,764 [myid:1] - INFO  
[QuorumPeer[myid=1](plain=[0:0:0:0:0:0:0:0]:2183)(secure=disabled):QuorumPeer@1371]
 - LOOKING
2020-04-17 18:49:24,765 [myid:1] - INFO  
[QuorumPeer[myid=1](plain=[0:0:0:0:0:0:0:0]:2183)(secure=disabled):FastLeaderElection@944]
 - New election. My id = 1, proposed zxid=0xfab000000002
{code}
 



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