cambyzju opened a new issue, #31569: URL: https://github.com/apache/doris/issues/31569
### Search before asking - [X] I had searched in the [issues](https://github.com/apache/doris/issues?q=is%3Aissue) and found no similar issues. ### Version master & 2.0 ### What's Wrong? If current running connections bigger than qe_max_connection, new connection will hang ### What You Expected? return error instead of hang ### How to Reproduce? 1. set qe_max_connection=2 in fe.conf; 2. run two SQL: `select sleep(300)`; 3. run three SQL: `select 1`; In the log we found, the third sql already been rejected, and will not be executed anymore, the third connection hanged. `2024-02-29 11:55:49,299 WARN (doris-mysql-nio I/O-2|193) [ThreadPoolManager$LogDiscardPolicy.rejectedExecution():305] Task org.apache.doris.mysql.AcceptListener$$Lambda$1918/502547814@1a81657b rejected from mysql-nio-pool java.util.concurrent.ThreadPoolExecutor@59bfd0bf[Running, pool size = 2, active threads = 2, queued tasks = 0, completed tasks = 24]` ### Anything Else? _No response_ ### Are you willing to submit PR? - [ ] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct) -- 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...@doris.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
