title: Quartz scheduler in Tomcat 6, thread does not stop
body: <p>for my webapp I use Quartz. When I deploy the app all is ok. When I undeploy the app, the Quartz thread is not destroyed.</p>
  <p>Log is:</p>
  <blockquote>
  <p><strong>INFO</strong>: Stopping service Catalina</p>
  <p><strong>SEVERE</strong>: The web application
  [/example] appears to have started a
  thread named
  [DefaultQuartzScheduler_Worker-1] but
  has failed to stop it. This is very
  likely to create a memory leak. Jul
  12, 2010 6:30:40 PM
  org.apache.catalina.loader.WebappClassLoader
  clearReferencesThreads</p>
  </blockquote>
  <p>Anyone can tell me how I can force the destroy action for those threads?</p>
  <p>Thanks,</p>
  <p>Tommaso</p>