Hi, Adrian
The ping timeout happened again after 30 hours' stress testing (routing 120
messages/second).
But this time, i got more information.
In the following, i list the output of log.error(...) and System.out.println(...).
(1) "init() return successfully" is the output of init() method. Once a new connection
is established, it is printed.
(2)Here, you can see there are two "init() return successfully". The first one is
printed when i started the stress testing
and the second one is printed by the init() method which is invoked in the
onException() method.
(3)The disconnection of the old connection is not returned because no information is
printed (pls read the disconnection codes).
(4)On the whole, one new connection is established. so the stress testing can
continue. :). But i am not sure whether the
hang of the disconnection of the old connection will introduce other potential problem.
(5)This time, you lost the bet :) :). I guess the problem is that the jms
provider(JbossMQ) closed the connection before it invoke the onException() method.
By the way, what is the exact meaning of "ping timeout"? I think the best solution is
to find out why "ping timeout" happened?
Regards
yang
-----------------------output of log.error and System.out.println()--------------------
[java] .init() return successfully
[java] org.jboss.mq.SpyJMSException: Connection Failed; - nested throwable:
(java.io.IOException: ping timeout.)
[java] onException() is called at Sat Apr 17 06:30:54 SGT 2004
[java] at org.jboss.mq.Connection.asynchFailure(Connection.java:718)
[java] at org.jboss.mq.Connection$PingTask.run(Connection.java:1311)
[java] at
EDU.oswego.cs.dl.util.concurrent.ClockDaemon$RunLoop.run(ClockDaemon.java:364)
[java] at java.lang.Thread.run(Thread.java:534)
[java] Caused by: java.io.IOException: ping timeout.
[java] at org.jboss.mq.Connection$PingTask.run(Connection.java:1303)
[java] ... 2 more
[java] init() return successfully
------------------------onExceptoin()
method-----------------------------------------------
public synchronized void onException(JMSException jmsException) {
log.error("onException() is called at " + new Date());
System.out.println("onException() is called at " + new Date());
jmsException.printStackTrace();
oldconnection = queueConnection;
boolean reconnection = false;
retry : for (int i = 0; i < 10; i++) {
try {
C2SConnectorMessageListener.this.init();
reconnection = true;
break retry;
} catch (Exception e2) {
log.error("reconnection failed");
System.out.println("reconnection failed");
try {
log.error("sleep for 2 seconds and try
reconnect again");
Thread.sleep(2000);
} catch (InterruptedException e1) {
e1.printStackTrace();
}
}
}
if (!reconnection) {
System.out.println("RECONNECTION FAILED");
log.error("RECONNECTION FAILED");
System.exit(1);
}
Thread disconnThread = new Thread() {
public void run() {
try {
if (oldconnection != null) {
oldconnection.close();
oldconnection = null;
}
log.debug("close the old connection success");
System.out.println("close the old connection
success");
return;
} catch (Exception e) {
log.error("disconnect the old connection
failed");
}
}
};
disconnThread.start();
}
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