[ openjms-Bugs-1689845 ] Client shutdown problem

Bugs item #1689845, was opened at 2007-03-28 14:46
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Category: client
Group: v0.7.7-alpha-3
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Jan Dittberner (jandd)
Assigned to: Jim Alateras (jalateras)
Summary: Client shutdown problem

Initial Comment:
We have an OpenJMS-Client integrated in a web application. The OpenJMS connection is created and closed in an own JMSManager class which is started and stopped in a ServletContextListener. When starting the ServletContext we perform:

// initialize JNDI-Context
context = new InitialContext(cxtEnv);
// get connection
topicConnection = ((TopicConnectionFactory) context.lookup(factoryKeyTopic)).createTopicConnection();
topicConnection.start();
// create a QueueSession
topicSession = topicConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);

on shutdown we do:

topicSession.close();
topicConnection.close();
context.close();

If the servlet container (Tomcat 5.5) is shut down the ClockDaemon from DefaultConnectionPool stays alive. After some seconds a NullPointerException is thrown. The tomcat process never stops. The following Stacktrace is logged:

Exception in thread "ManagedConnectionReaper1" java.lang.NullPointerException
	at org.apache.log4j.LogManager.getLogger(LogManager.java:188)
	at org.apache.log4j.Logger.getLogger(Logger.java:104)
	at org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:229)
	at org.apache.commons.logging.impl.Log4JLogger.error(Log4JLogger.java:193)
	at org.exolab.jms.net.connector.DefaultConnectionPool$IdleReaper.run(DefaultConnectionPool.java:644)
	at EDU.oswego.cs.dl.util.concurrent.ClockDaemon$RunLoop.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

Log4J may not be available after the ServletContext is shutdown.

The following threads keep running:

org.apache.catalina.startup.Bootstrap at localhost:2738	
	Thread [Clock Daemon] (Running)	
	Thread [Timer-1] (Running)	
	Thread [http-8080-Processor25] (Running)	
	Thread [TP-Processor4] (Running)	
	Thread [DestroyJavaVM] (Running)	


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