[ZOOKEEPER-564] Give more feedback on that current flow of events in java client logs

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.1
• Fix Version/s: 3.3.0
• Labels: logging
• Hadoop Flags: Reviewed
• Assignee: Patrick D. Hunt
• Reporter: Jean-Daniel Cryans
• Created: 28/Oct/09 20:42
• Updated: 07/May/10 17:40
• Resolved: 07/Nov/09 04:52

Description

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:

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.SelectionKeyImpl@2c9b42e6

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.

Issue Links

• is part of: ZOOKEEPER-558 server "sent" stats not being updated