無法停止輔助線程，可能會導致內存泄漏。

Question

我正在使用實現ServletContextListener的Servlet來啟動Crystal Scheduler實例@ starup。 在contextDestroyed（）方法中，調度程序實例已停止。

@Override
public void contextDestroyed(ServletContextEvent sce) {
    try {
        Scheduler scheduler = QuartzSchedulerUtil.getCurrentScheduler();
        scheduler.shutdown(true);
        // Sleep for a bit so that we don't get any errors
        Thread.sleep(1000);
        Driver mySqlDriver = DriverManager.getDriver(hibernateConnectionUrl);
        DriverManager.deregisterDriver(mySqlDriver);
    } catch (SchedulerException ex) {
        Logger.getLogger(QuartzServlet.class.getName()).log(Level.SEVERE, null, ex);
    } catch (InterruptedException ex) {
        Logger.getLogger(QuartzServlet.class.getName()).log(Level.SEVERE, null, ex);
    } catch (SQLException ex) {
        Logger.getLogger(QuartzServlet.class.getName()).log(Level.SEVERE, null, ex);
    }        
    System.out.println("THE QUARTZ APP STOPPED");
}

但是，在部署應用程序時，我收到內存泄漏警告，指定woker線程沒有停止。

Jul 10, 2012 3:46:12 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads SEVERE: The web application [/latest-raisin]
appears to have started a thread named [Timer-0] but has failed to
stop it. This is very likely to create a memory leak.

Jul 10, 2012 3:46:12 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads SEVERE: The web application [/latest-raisin]
appears to have started a thread named 
[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0] but
has failed to stop it. This is very likely to create a memory leak.

Jul 10, 2012 3:46:12 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads SEVERE: The web application [/latest-raisin]
appears to have started a thread named
[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1] but
has failed to stop it. This is very likely to create a memory leak.

Jul 10, 2012 3:46:12 PM org.apache.catalina.loader.WebappClassLoader
clearReferencesThreads SEVERE: The web application [/latest-raisin]
appears to have started a thread named
[com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2] but
has failed to stop it. This is very likely to create a memory leak.

我嘗試了帖子中提到的解決方案-http://forums.terracotta.org/forums/posts/list/15/4341.page，但是在取消部署該應用程序時仍然收到嚴重的內存泄漏警告。

Answer 1

您可以將org.quartz.scheduler.interruptJobsOnShutdown的屬性設置為在要關閉時仍在執行中的作業中斷。