Vert.x clustered event bus doesn’t pass opentelemetry tracing information (traceId, parentSpanId) when opentelemetry is enabled through javaagent. After debugging I found that opentelemetry context is not being bound to vert.x context.

AFAIK vertx-opentelemetry provides VertxContextStorageProvider to bind opentelemetry context with vert.x context. VertxContextStorage gets somehow replaced with or wrapped into AgentContextStorage and this class doesn’t delegate call to VertxContextStorage for method attach() when application make call to Span.makeCurrent()

AgentContextStorage

VertxContextStorage

OpenTelemetryTracer.sendRequest

Thanks