leizhiyuan opened a new issue, #7737: URL: https://github.com/apache/rocketmq/issues/7737
### Before Creating the Bug Report - [X] I found a bug, not just asking a question, which should be created in [GitHub Discussions](https://github.com/apache/rocketmq/discussions). - [X] I have searched the [GitHub Issues](https://github.com/apache/rocketmq/issues) and [GitHub Discussions](https://github.com/apache/rocketmq/discussions) of this repository and believe that this is not a duplicate. - [X] I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ. ### Runtime platform environment every ### RocketMQ version every ### JDK Version every ### Describe the Bug ``` 2024-01-09 17:31:15 WARN NettyServerCodecThread_3 - event queue size [10001] over the limit [10000], so drop this event NettyEvent [type=CLOSE, remoteAddr=9.255.72.100:24254, channel=[id: 0xf5169ee0, L:/xxxx:8911 ! R:/xxxx:24254]] ``` there are many empty value in groupChannelTable ``` `---ts=2024-01-09 17:38:37;thread_name=NettyEventExecutor;id=2f;is_daemon=false;priority=5;TCCL=sun.misc.Launcher$AppClassLoader@58134517 `---[24.812301ms] org.apache.rocketmq.broker.client.ClientHousekeepingService:onChannelClose() +---[0.02% 0.004639ms ] org.apache.rocketmq.broker.BrokerController:getProducerManager() #72 +---[99.67% 24.730868ms ] org.apache.rocketmq.broker.client.ProducerManager:doChannelCloseEvent() #72 +---[0.02% 0.004308ms ] org.apache.rocketmq.broker.BrokerController:getConsumerManager() #73 +---[0.03% 0.006361ms ] org.apache.rocketmq.broker.client.ConsumerManager:doChannelCloseEvent() #73 +---[0.01% 0.003326ms ] org.apache.rocketmq.broker.BrokerController:getFilterServerManager() #74 `---[0.01% 0.003547ms ] org.apache.rocketmq.broker.filtersrv.FilterServerManager:doChannelCloseEvent() #74 ``` and will more slow with time fly ### Steps to Reproduce no need ### What Did You Expect to See? normal ### What Did You See Instead? leak ### Additional Context we can fix inn scanNotActiveChannel, which is a simple way ``` Iterator<Entry<String, ConcurrentHashMap<Channel, ClientChannelInfo>>> iter = this.groupChannelTable.entrySet().iterator(); while (iter.hasNext()) { Entry<String, ConcurrentHashMap<Channel, ClientChannelInfo>> entry = iter.next(); ConcurrentHashMap<Channel, ClientChannelInfo> chlMap = entry.getValue(); if (chlMap != null && chlMap.isEmpty()) { iter.remove(); } } ``` -- 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: commits-unsubscr...@rocketmq.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
