删除主题后，pull请求不会停止

消费者正在订阅一个主题，当将主题权限修改为不可读或只是删除这个主题时，我们希望看到消费者不会向broker发送拉请求，但实际上拉请求将一直在进行，除非重新启动消费者。

异常堆栈跟踪如下所示：

2021-04-02 15:24:54.018 WARN [NettyClientPublicExecutor_2:RocketmqClient:130] execute the pull request exception org.apache.rocketmq.client.exception.MQBrokerException: CODE: 17 DESC: topic[topic-flash2] not exist, apply first please! See http://rocketmq.apache.org/docs/faq/ for further details. BROKER: 192.168.60.39:10911 at org.apache.rocketmq.client.impl.MQClientAPIImpl.processPullResponse(MQClientAPIImpl.java:794) ~[rocketmq-client-4.8.0.jar:4.8.0] at org.apache.rocketmq.client.impl.MQClientAPIImpl.access$200(MQClientAPIImpl.java:167) ~[rocketmq-client-4.8.0.jar:4.8.0] at org.apache.rocketmq.client.impl.MQClientAPIImpl$2.operationComplete(MQClientAPIImpl.java:745) [rocketmq-client-4.8.0.jar:4.8.0] at org.apache.rocketmq.remoting.netty.ResponseFuture.executeInvokeCallback(ResponseFuture.java:54) [rocketmq-remoting-4.8.0.jar:4.8.0] at org.apache.rocketmq.remoting.netty.NettyRemotingAbstract$2.run(NettyRemotingAbstract.java:319) [rocketmq-remoting-4.8.0.jar:4.8.0] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_211] at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) [?:1.8.0_211] at java.util.concurrent.FutureTask.run(FutureTask.java) [?:1.8.0_211] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_211] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_211] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_211]

正如下面的代码所示，当一个主题没有队列时，AllocateStrategy会抛出一个异常， 则processQueueTable将不会更新

rocketmq 4.8.0

原提问者GitHub用户EZLippi