当对topic进行消息查询后，如果删除该topic，日志会出现大量MQClientException错误

[ziyunmuxu]

场景：当在mqcloud上对某个topic进行消息查询后，此时若删除该topic，会导致在MQClientInstance的定时任务updateTopicRouteInfoFromNameServer出现大量WARNING日志； 原因个人分析，由于使用mqAdmin对象池对topic进行查询时，会将topic信息保存到producerTable中，当删除该topic后，对象池中的producerTable不会同步删除该topic，导致后续定时任务更新topic信息一致报错，不知道上述分析是否正确，有什么解决方式没有？

2021-05-20 18:40:08.065 {MQClientFactoryScheduledThread} WARN RocketmqClient-115 - get Topic [_topic] RouteInfoFromNameServer is not exist value 2021-05-20 18:40:08.065 {MQClientFactoryScheduledThread} WARN RocketmqClient-130 - updateTopicRouteInfoFromNameServer Exception org.apache.rocketmq.client.exception.MQClientException: CODE: 17 DESC: No topic route info in name server for the topic: _topic See http://rocketmq.apache.org/docs/faq/ for further details. at org.apache.rocketmq.client.impl.MQClientAPIImpl.getTopicRouteInfoFromNameServer(MQClientAPIImpl.java:1385) at org.apache.rocketmq.client.impl.MQClientAPIImpl.getTopicRouteInfoFromNameServer(MQClientAPIImpl.java:1355) at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:622) at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:509) at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:358) at org.apache.rocketmq.client.impl.factory.MQClientInstance$3.run(MQClientInstance.java:275) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)

[gaoyf]

无法重现，请提供完整日志和详细操作步骤，以及mqcloud的版本。

[ziyunmuxu]

步骤一：申请topic[notify_error_test] 日志： 2021-05-25 10:07:31 INFO http-nio-8080-exec-10 - the topic[notify_error_test] route info changed, old[null] ,new[TopicRouteData [orderTopicConf=null, queueDatas=[QueueData [brokerName=dev-rocketmq-1, readQueueNums=8, writeQueueNums=8, perm=6, topicSynFlag=0]], brokerDatas=[BrokerData [brokerName=dev-rocketmq-1, brokerAddrs={0=...:10911, 1=...:10911}]], filterServerTable={}]] 2021-05-25 10:07:31 INFO http-nio-8080-exec-10 - topicRouteTable.put. Topic = notify_error_test, TopicRouteData[TopicRouteData [orderTopicConf=null, queueDatas=[QueueData [brokerName=dev-rocketmq-1, readQueueNums=8, writeQueueNums=8, perm=6, topicSynFlag=0]], brokerDatas=[BrokerData [brokerName=dev-rocketmq-1, brokerAddrs={0=...:10911, 1=...:10911}]], filterServerTable={}]]

步骤二：生产者任意发送消息，并在页面上点击该Topic，通过生产者返回的msgId查询某条消息 步骤三：关闭生产者，并删除该topic，日志中会一直出现下面告警信息 2021-05-25 10:20:20 WARN MQClientFactoryScheduledThread - get Topic [notify_error_test] RouteInfoFromNameServer is not exist value 2021-05-25 10:20:20 WARN MQClientFactoryScheduledThread - updateTopicRouteInfoFromNameServer Exception org.apache.rocketmq.client.exception.MQClientException: CODE: 17 DESC: No topic route info in name server for the topic: notify_error_test See http://rocketmq.apache.org/docs/faq/ for further details. at org.apache.rocketmq.client.impl.MQClientAPIImpl.getTopicRouteInfoFromNameServer(MQClientAPIImpl.java:1385) at org.apache.rocketmq.client.impl.MQClientAPIImpl.getTopicRouteInfoFromNameServer(MQClientAPIImpl.java:1355) at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:622) at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:509) at org.apache.rocketmq.client.impl.factory.MQClientInstance.updateTopicRouteInfoFromNameServer(MQClientInstance.java:358) at org.apache.rocketmq.client.impl.factory.MQClientInstance$3.run(MQClientInstance.java:275) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)

[gaoyf]

可以上传mqcloud的stdout.log和rocketmq.log吗