Databend distributed tracing example

How to set up demo environment

1. Install Docker and golang

2. Install Jaeger All In One

docker run --rm --name jaeger   -e COLLECTOR_ZIPKIN_HOST_PORT=:9411   -p 6831:6831/udp   -p 6832:6832/udp   -p 5778:5778   -p 16686:16686   -p 4317:4317   -p 4318:4318   -p 14250:14250   -p 14268:14268   -p 14269:14269   -p 9411:9411   jaegertracing/all-in-one:1.55

3. Setup databend config toml file with tracing enabled

[log.tracing]
on = true
capture_log_level = "TRACE"
otlp_endpoint = "http://0.0.0.0:4317"

4. Run golang example

go run main.go

How to view tracing data

visit http://localhost:16686/ to view tracing data. select test-service as the service target

Expected result

totally 10 child span spawned from parent span, each span contains tracing information from existing databend cluster

in each child span, you expect to see attached baggage context