Tracing context missing from Kafka Consumer

[mcadecio]

Version

4.5.9

Context

I recently upgraded the Vertx version in one of my applications and noticed that Span context is being cleared prematurely resulting in calls to other services missing the 'traceparent' header as well as spans ending much earlier than expected.

Do you have a reproducer?

• https://github.com/mcadecio/vertx-kafka-consumer-tracing-reproducer

The project uses Otel as the tracing provider.

Steps to reproduce

1. Start kafka server using docker compose file in ./docker
2. Run Main java file
3. Run curl command
   curl --verbose --header 'traceparent: 00-eafaefe4aa38e8efbcaa5868ebee1c6a-148fa5fc0892068f-01' http://localhost:8888/
4. View application logs
5. After making a call to a method that returns a Future, the span context (traceId, spanId) is missing.

Extra

• java version: 17