[io.jaegertracing.internal.JaegerTracer#<init>] No shutdown hook registered: Please call close() manually on application shutdown.

[lafr]

I'm testing my application with WildFly Full 19.0.0.Beta3-SNAPSHOT.

During deployment of my ear file with some modules and my war file I get a couple of Info-messages like this one:

19.02. 22:30:07,131 INFO  [io.jaegertracing.internal.JaegerTracer#<init>] No shutdown hook registered: Please call close() manually on application shutdown.

The message did not appear when using WildFly 18.x.

What do I have to add to my application to avoid this message?

[ehugonnet]

The tracers configured in the subsystem and injected from Jaeger by WildFly are using manualShutdown. Are you using a environment variable tracer ?

wildfly/JaegerTracerConfiguration.java at master · wildfly/wildfly · GitHub

[lafr]

No, no such environment variable.

The WildFly server 19.x is running on a Solaris SPARC Server, not in a cloud environment or a container.

As this currently is and possibly will be the deployment situation for our customers, I for now slimmed down the standalone-full.xml and eliminated all microprofile modules.

[ehugonnet]

As this is a pure jaeger client trace we could switch to WARN  this category.

[ehugonnet]

In conclusion looking at jaeger client code this is not an issue at all and this is not a warning. Just an info that a tracer lifecycle is managed by WildFly (looking at the code you can see that this is also the case for glassfish)