3424672656 opened a new issue, #8140: URL: https://github.com/apache/rocketmq/issues/8140
### 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 Centos ### RocketMQ version 5.2.1 ### JDK Version 11 ### Describe the Bug When asynchronously sending messages, if num is obtained but size is not obtained under the back pressure control, num cannot be released and the sending rate is affected.  ### Steps to Reproduce null ### What Did You Expect to See? When asynchronously sending messages, if num is obtained but size is not obtained under the back pressure control,num can be released, which affects the sending rate. ### What Did You See Instead? null ### Additional Context _No response_ -- 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
