happier2 opened a new issue, #13443: URL: https://github.com/apache/skywalking/issues/13443
### Search before asking - [x] I had searched in the [issues](https://github.com/apache/skywalking/issues?q=is%3Aissue) and found no similar issues. ### Apache SkyWalking Component Java Agent (apache/skywalking-java) ### What happened With Spring Cloud(version 2024.0.0) and Spring Cloud Gateway(version 4.2.0), Spring Cloud Gateway will dispatch requests to other services. What we expect is that every request that dispatched by gateway should have unique traceId in the downstream micro-services. But, we found theses traceIds are duplicated when the concurrency of requests is very high. <img width="1429" height="659" alt="Image" src="https://github.com/user-attachments/assets/1d3ee190-9046-4386-badd-b635727e50bb"; /> We just log all these request's headers and bodies (micro-service just uses servlet container, which is tomcat). We can conclude that thread http-nio-48084-exec-9 and thread http-nio-48084-exec-5 have same traceId and same http header "sw8", while these two reuqests are different outer requests that have different request bodies. ### What you expected to happen I suspect that it is caused by this patch [#747](https://github.com/apache/skywalking-java/pull/747). This problem is only happened when concurrency is heavy. ### How to reproduce With Spring Cloud version 2024.0.0+, Spring Cloud Gateway(webflux) and one service with tomcat and concurrency is heavy. ### Anything else _No response_ ### Are you willing to submit a pull request to fix on your own? - [ ] Yes I am willing to submit a pull request on my own! ### 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: notifications-unsubscr...@skywalking.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
