anchor.diff:  quarkus.jaeger.service-name=myservice // <1>
   quarkus.jaeger.sampler-type=const // <2>
   quarkus.jaeger.sampler-param=1 // <3>
  -quarkus.jaeger.endpoint=http://localhost:14268/api/traces
   ----
   
   <1> If the `quarkus.jaeger.service-name` property (or `JAEGER_SERVICE_NAME` environment variable) is not provided then a "no-op" tracer will be configured, resulting in no tracing data being reported to the backend.
  
positive.code: 
  [source, text]
  ----
  ./mvnw compile quarkus:dev -Djvm.args="-DJAEGER_SERVICE_NAME=myservice -DJAEGER_SAMPLER_TYPE=const -DJAEGER_SAMPLER_PARAM=1 -DJAEGER_ENDPOINT=http://localhost:14268/api/traces"
  ----
  
  Once both the application and tracing system are started, you can make a request to the provided endpoint:
  
negative.code: ```
  When the first request has been submitted, the Jaeger tracer within the app will be initialized:
  ```
  2019-10-16 09:35:23,464 INFO  [io.jae.Configuration] (executor-thread-1) Initialized tracer=JaegerTracer(version=Java-0.34.0, serviceName=myservice, reporter=RemoteReporter(sender=UdpSender(), closeEnqueueTimeout=1000), sampler=ConstSampler(decision=true, tags={sampler.type=const, sampler.param=true}), tags={hostname=localhost.localdomain, jaeger.version=Java-0.34.0, ip=127.0.0.1}, zipkinSharedRpcSpan=false, expandExceptionLogs=false, useTraceId128Bit=false)
  ```
  
  Then visit the http://localhost:16686[Jaeger UI] to see the tracing information.
  
  Hit `CTRL+C` to stop the application.
  
  == Additional instrumentation
  
  The https://github.com/opentracing-contrib[OpenTracing API Contributions project] offers additional instrumentation that can be used to add tracing to a large variety of technologies/components.
  
  The instrumentation documented in this section has been tested with Quarkus and works in both standard and native mode.
  
  === JDBC
  
  The https://github.com/opentracing-contrib/java-jdbc[JDBC instrumentation] will add a span for each JDBC queries done by your application, to enable it, add the following dependency to your pom.xml:
  
  [source, xml]
  ----
  