Deadlock on startup with exemplar

[nuharaf]

Hello, I encounter deadlock on application startup when using micrometer trace and prometheus registry. I also happen to use loki-logback-appender (https://github.com/loki4j/loki-logback-appender)

Based on my search on github, this might be related to metric-trace circularity.

Right now I use workaround like suggested in this issue (spring-projects/spring-framework#32996 (comment)) and it seem to work.
At the same time I also disable loki4j metric for now

Spring Boot Version : 3.5.3

deadlock.txt

[mhalbritter]

Hello! If you'd like us to spend some time investigating, please take the time to provide a complete minimal sample (something that we can unzip or git clone, build, and deploy) that reproduces the problem.

[spring-projects-issues]

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[spring-projects-issues]

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.