石英：内存泄漏？
我正在使用Quartz来每小时运行一项工作。 Servlet在Tomcat上运行，我正在使用ServletConextListener来侦听上下文何时被销毁。
当我关闭tomcat时，我收到消息：
“似乎已经启动了一个名为[MyScheduler_Worker-1]的线程，但未能阻止它”。
但后来我看到这个消息：
“[DEBUG] 28 Sep 11：45：26.671 AM MyScheduler_Worker-1 [org.quartz.simpl.SimpleThreadPool]
WorkerThread已关闭。“
那么可以安全地假设这个线程没有内存泄漏？
以下是我的日志的外观：
{SEVERE: The web application [/*************] appears to have started a thread
named [MyScheduler_Worker-1] but has failed to stop it. This is very likely to c
reate a memory leak.
Sep 28, 2011 11:45:26 AM org.apache.catalina.loader.WebappClassLoader clearRefer
encesThreads
SEVERE: The web application [/*************] appears to have started a thread
named [MyScheduler_Worker-2] but has failed to stop it. This is very likely to c
reate a memory leak.
Sep 28, 2011 11:45:26 AM org.apache.catalina.loader.WebappClassLoader clearRefer
encesThreads
SEVERE: The web application [/*************] appears to have started a thread
named [MyScheduler_Worker-3] but has failed to stop it. This is very likely to c
reate a memory leak.
[DEBUG] 28 Sep 11:45:26.671 AM MyScheduler_Worker-2 [org.quartz.simpl.SimpleThre
adPool]
WorkerThread is shut down.
[DEBUG] 28 Sep 11:45:26.671 AM MyScheduler_Worker-1 [org.quartz.simpl.SimpleThre
adPool]
WorkerThread is shut down.
[DEBUG] 28 Sep 11:45:26.671 AM MyScheduler_Worker-3 [org.quartz.simpl.SimpleThre
adPool]
WorkerThread is shut down.
我知道这是一条古老的线索，但如果其他人正在寻找它。
我们一直使用线程的警告，直到我们添加了代码来关闭我们的ServletContextListener.shutDown（）方法中的Quartz Scheduler。
关闭调度程序：
quartzScheduler.shutdown();
int ct = 0;
// Try waiting for the scheduler to shutdown. Only wait 30 seconds.
while(ct < 30) {
ct++;
// Sleep for a second so the quartz worker threads die. This
// suppresses a warning from Tomcat during shutdown.
Thread.sleep(1000);
if (quartzScheduler.isShutdown()) {
break;
}
}
您可以认为没有内存泄漏，因为您看到线程关闭消息。 但是，可能会在关闭前通过清理线程来发出警告。
The shutdown-hook plugin catches the event of the JVM terminating, and calls shutdown on the scheduler.
详情： - http://quartz-scheduler.org/documentation/quartz-2.x/configuration/ConfigPlugins
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