Propagators, java agent and spring boot application - traces are gone for some endpoints

[lucian-vanghele]

Describe the bug

We have an API autoinstrumented with javaagent, sending traces to Tempo via otel collector. From upstream we are receiving in our application uber-trace-id so we tried to use the propagators feature. It seems that after adding otel_propagators=tracecontext,jaeger on javaagent all the protected endpoints lost tracing data. We only have traces for unprotected endpoints. Removing the option brings back the tracing.

Steps to reproduce

• add otel_propagators=tracecontext,jaeger on javaagent
• restart the service and trigger some calls on different endpoints
• check traces sent to backend

Expected behavior

traces should still work after adding otel_propagators on all endpoints

Actual behavior

traces are not produced for protected endpoints.

Javaagent or library instrumentation version

javaagent 2.7.0

Environment

JDK: java-17-openjdk
OS: RHEL 5.14.0
[SpringBoot]org.springframework:spring-webmvc:jar:6.1.12

Additional context

No response

[laurit]

Please provide a minimal application that reproduces the issue along with any necessary instructions.

[lucian-vanghele]

Please provide a minimal application that reproduces the issue along with any necessary instructions.

Sorry, I can't provide an application as I'm not testing it in a "hello world" environment

[trask]

hi @lucian-vanghele, it's really hard to guess what the problem might be. If you aren't able to narrow it down to a minimal repro that we can use to troubleshoot then it will be difficult for us to help you.

[github-actions]

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