Give more feedback on that current flow of events in java client logs
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                 Key: ZOOKEEPER-564
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-564
             Project: Zookeeper
          Issue Type: Improvement
    Affects Versions: 3.2.1
            Reporter: Jean-Daniel Cryans


As discussed during the 10/23 meeting, one issue we have in debugging ZK client 
logs with HBase is that we have a hard time following the flow of events. It 
may be obvious for a ZK dev, but in our POV that kind of trace isn't very 
intuitive:

{code}
2009-09-27 15:41:10,776 INFO org.apache.zookeeper.ClientCnxn: Attempting 
connection to server ...
2009-09-27 15:41:10,776 INFO org.apache.zookeeper.ClientCnxn: Priming 
connection to java.nio.channels.SocketChannel[connected local=/ ... remote=...
2009-09-27 15:41:10,776 INFO org.apache.zookeeper.ClientCnxn: Server connection 
successful 
2009-09-27 15:41:10,784 WARN org.apache.zookeeper.ClientCnxn: Exception closing 
session 0x0 to sun.nio.ch.selectionkeyi...@2c9b42e6
{code}

This excerpt is just an example. We would like to see something like a 
numbering of the events and possibly, in the case of an exception, at which 
point did it went wrong and what's the next step.

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