On 13.07.2016 22:41, Mark Thomas wrote: > I've been through the MBean descriptor for a web application and as far > as I can tell, reading of all of the attributes is passive. It might > return a few unexpected nulls or maybe thrown an exception but it > shouldn't trigger any additional initialization. > > We need to find out what is triggering the second, unwanted > initialization. You'll need to add some logging to your app to capture > the relevant stack trace. When you have it, post it here. > > Mark
Dear Mark, thank you for your work and feedback! I understand what you mean by "reading is passive". I will try to collect some relevant parts from the log files tomorrow at work. And I may advance any log level you request for. But I'm not able to modify any application, because I'm responsible for operations and not a member of the developer staff and have no other tool chain than "vi and javac". In the other way round, i may deploy any testing war's you may provide me. After my email, i did compare the output of the MBean Request between Tomcat6 and Tomcat8. And i noticed, that there is another model name in the answer and there are more attributes. And I play around with restarting of a bigger app which spend about 3 sec for the initialization. I disabled the external monitoring and apply "the" MBean request by hand (with wget). I run the tests about 10 times and it was reproducible failing with an "early" MBean request and also reproducible propper working without. Now, may you or anybody else give me a hint how to log what is triggering a catalina-exec worker, what are the parameters for this call or what's the caller stack to get an idea of the triggering code path. Tomorrow I also will test, if any other "regular" request to the application will raise this race condition during application startup using Tomcat8. with greetings Guido --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
