lizhiboo commented on code in PR #4562: URL: https://github.com/apache/rocketmq/pull/4562#discussion_r915373979
########## client/src/main/java/org/apache/rocketmq/client/impl/producer/DefaultMQProducerImpl.java: ########## @@ -671,8 +676,18 @@ private SendResult sendDefaultImpl( private TopicPublishInfo tryToFindTopicPublishInfo(final String topic) { TopicPublishInfo topicPublishInfo = this.topicPublishInfoTable.get(topic); if (null == topicPublishInfo || !topicPublishInfo.ok()) { - this.topicPublishInfoTable.putIfAbsent(topic, new TopicPublishInfo()); - this.mQClientFactory.updateTopicRouteInfoFromNameServer(topic); + try { + if(lockUpdatePublishInfo.tryLock(LOCK_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)){ Review Comment: We can add a parameter isEmpty2FetchFromNamesrv in mQClientFactory.updateTopicRouteInfoFromNameServer method. if isEmpty2FetchFromNamesrv is true, and double-check topic route info is also empty after tryLock, then update from namesrv. if isEmpty2FetchFromNamesrv is false, and double-check topic route info is not empty after tryLock, then do not update from namesrv. MQClientInstance's scheduled task will update topic route info regually. ########## client/src/main/java/org/apache/rocketmq/client/impl/producer/DefaultMQProducerImpl.java: ########## @@ -671,8 +676,18 @@ private SendResult sendDefaultImpl( private TopicPublishInfo tryToFindTopicPublishInfo(final String topic) { TopicPublishInfo topicPublishInfo = this.topicPublishInfoTable.get(topic); if (null == topicPublishInfo || !topicPublishInfo.ok()) { - this.topicPublishInfoTable.putIfAbsent(topic, new TopicPublishInfo()); - this.mQClientFactory.updateTopicRouteInfoFromNameServer(topic); + try { + if(lockUpdatePublishInfo.tryLock(LOCK_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)){ Review Comment: We can add a parameter isEmpty2FetchFromNamesrv in mQClientFactory.updateTopicRouteInfoFromNameServer method. if isEmpty2FetchFromNamesrv is true, and double-check topic route info is also empty after tryLock, then update from namesrv. if isEmpty2FetchFromNamesrv is false, and double-check topic route info is not empty after tryLock, then do not update from namesrv. MQClientInstance's scheduled task will update topic route info reguarlly. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@rocketmq.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org