Question: How the same metadata is inserted into each other's signals.

[chenmudu]

Hi, bro, thanks very much for these excellent products, but I have some troubles about using them.
I used the following tools:

• otel-java-agent v1.17.0
• pyroscope-java v0.10.1
• otel-profiling-java v0.10.1.3.jar
• my-java-service-app ignore version.

I'm trying to understand what's going on internally, I can see that spans is being processed, put in the span id named profile_id, and a few others as seen in the Root Span in Jaeger UI, for example: pyroscope.profile.baseline.url, pyroscope.profile.url and many more in the otel-profiling-java.

But when I tried to use pyroscope ui, I found additional search conditions, such as span name in select tag, profile_id can be searched directly in the search box, but I didn't find how to combine span_name and profiler_id and maybe some other metadata in the profile signal, which puzzles me quite a bit.

To sum up, there are two points:

1. How to put span info into the current root span. (I already know how it works)
2. How to put span info into the current profile signal (still confused).

I'm trying to figure out how to put span info inside profile signal, but I can't find any entry. I can see how the prometheus exemplars are placed inside the metrics labels. Maybe I'm doing it wrong and I'd like some help. thank you very much.♥

[chenmudu]

I will close this issue after getting an official answer.

[qsLI]

I will close this issue after getting an official answer.

I am confused too. Do you get official answer?