Question

我的客户端应用程序是运行SpringBoot 2.1.1的Spring-shell应用程序。

我们正在按需创建Rabbitmq连接CachingConnectionFacotry

    CachingConnectionFactory connectionFactory = new CachingConnectionFactory(uri);

    connectionFactory.setPublisherReturns(true);

退出应用程序时，在@PreDestroy和/或cachingConnectionFactory.destroy();事件上调用onContextClosed不会关闭cachingConnectionFactory。该应用程序需要一分钟才能退出。

下面的线程转储表明cachingConnectionFactory中有一个执行程序尚未关闭。

"spring-rabbit-deferred-pool-12" #29 prio=5 os_prio=31 tid=0x00007ff61245e000 nid=0x7503 waiting on condition [0x000070000fa57000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x000000076c928300> (a java.util.concurrent.SynchronousQueue$TransferStack)
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
	at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
	at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
	at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
	at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

"spring-rabbit-deferred-pool-11" #28 prio=5 os_prio=31 tid=0x00007ff616461000 nid=0x7303 waiting on condition [0x000070000f954000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x000000076c928300> (a java.util.concurrent.SynchronousQueue$TransferStack)
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
	at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
	at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
	at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
	at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

"process reaper" #14 daemon prio=10 os_prio=31 tid=0x00007ff614cd0800 nid=0x590b waiting on condition [0x000070000ec2d000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x00000006c078c1e0> (a java.util.concurrent.SynchronousQueue$TransferStack)
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
	at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
	at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
	at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
	at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

我可以立即退出该应用程序吗？

Answer 1

我认为这与该线程池无关...

public final void destroy() {
    super.destroy();
    resetConnection();
    if (getContextStopped()) {
        this.stopped = true;
        if (this.channelsExecutor != null) {
            this.channelsExecutor.shutdownNow();
        }
    }
}

shutDownNow()在重置连接后被调用，并且显然所有线程都是可中断的。

最好的猜测是（可能与网络有关的）延迟resetConnection()。

在延迟消除后发布 complete 线程转储，可能是在GitHub上，在pastebin上或类似的版本上。

Spring amqp cachingConnectionFactory一分钟未关闭

1 个答案: