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kotlinlang

Cross-posting this here in case you folks have some insight :slightly_smiling_face:

<https://kotlinlang.slack.com/archives/C1CFAFJSK/p1663212895400299>

I'm guessing it'll also depend a lot on the libraries you use. I started using Kotlin recently (I've only been using it for a week or so), but was able to use the jvm open telemetry agent with kotlin and get decent trace coverage (no manual instrumentation so far). I use Vert.x on the server and use kotlin coroutines.

Not sure if it has to do with specific libraries :thinking_face: If you look at some of the repro snippets in the issues - this one for example; <https://github.com/open-telemetry/opentelemetry-java-instrumentation/issues/6542>

It's evident with very simple sandboxed use-cases

Took us some time to learn that the tracing was not working as expected once we started drilling down, it wasn't clear since there definitely were some traces - but they just had incorrect measurements

Gotcha! Thanks for sharing this! I've only been using Kotlin for a week or so, and so far the traces I got out of a vert.x app looked okay. I'll keep tabs on the output I see to ensure that things are actually working.