Problem when integrating with Istio

[taman9333]

I was trying to integrate OTEL with Istio as I have Istio in production environment
since one of the features that istio support is distributed tracing on Infrastructure level, I've installed jaeger following this https://istio.io/latest/docs/tasks/observability/distributed-tracing/jaeger/
But there were some problems that I had
1 - context propagation is not handled in a good. you need to pass headers through every request (url)
2 - also sometimes I will need to set custom span on my codebase level (so it's better to use OTEL)

So I started to use OTEL in a small repo here Foo -> Bar -> Baz.
But I had a problem

After using b3-propagator (following this doc) the trace showed as expected but there are warning (invalid parent span IDs) in every spans in jaeger dashboard as attached in the image

[obecny]

From what I see Istio supports multi-header format, did you use multi format or single ?

[taman9333]

I tried both & the default one also but with the same problem
I think the problem is that OTEL is change headers not passing them as they are
I think if traces could be propagated without the span ids being updated this will solve the problem but don't know if that's possible or not
I also noticed x-request-id got changed when I log headers

[taman9333]

This using propagator multi header as Isto supported

[jpkrohling]

1. have you tried the bookinfo example? Does it work fine? If it's also showing the same type of message, you might have a setup issue, likely in Istio's side of things
2. try searching for the span ID that was shown in the message. If it exists in a disconnected trace, it might give a hint on what's going on
3. try reloading the trace after a few moments. Spans don't all arrive at the same time at the backend, so, it's possible that the parent span wasn't there when you opened the trace, but arrived later