It may be caused by maxThreads parameter in http connector, try to increase
lucio 2010/7/16 Mark Thomas <ma...@apache.org> > On 16/07/2010 06:49, Matt Peterson wrote: > >> While load testing our clustered Tomcats, we are seeing the following >> stack >> trace in our catalina.out occasionally, but not regularly: >> >> >> >> Jul 16, 2010 3:34:49 PM org.apache.catalina.ha.session.DeltaManager >> messageReceived >> >> SEVERE: Manager [localhost#/urs]: Unable to receive message through TCP >> channel >> >> java.lang.IllegalStateException: removeAttribute: Session already >> invalidated >> > > <snip/> > > > Under what conditions would this occur? Could it be that a session diff is >> being transmitted, but the session it relates to has been invalidated by >> the >> time the diff is processed (via a user logout for example)? Or could it be >> that a timeout has been reached??? >> > > Someone at $work has been doing a load test with tc Server (which has > identical code to Tomcat in this area) and seen the same issue. I know it > isn't due to timeout since the sessions are only a few seconds old when it > happens. My current guess is that the messages are not being processed in > the same order as they are sent. I need to dig into this more to figure out > if this is a configuration issue or a bug. > > I did wonder if switching to channel send options 6 would fix it. I'll get > them to try that and see. > > Mark > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
