Disable Spring MVC Instrumentation

[AndresBena19]

I previously asked about the possibility to customize the metric http.server.request.duration that is configured when we have the spring mvc instrumentation enable.

doc: https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/921d53e4fb653b4b343b1a1a85d9752ef3e495fc/docs/supported-libraries.md

previous discussion: #14825

so, because of the experimental nature + the complexity to customize the http.server.request.duration metric, I decided to deactivate mvc instrumentation and use the spring boot native instrumentation, so http.client.requests and http.server.requests are easy customize using observations.

So the question is.

• Is this a valid decision or am I falling into a bad pattern?

Also another motivation to deactivate the mvc instrumentation is because I see duplicated span when using spring boot with the default configurations (spring mvc enable by default), one from org.springframework.boot and another from io.opentelemetry.spring-webmvc-6.0, is this expected?

[laurit]

Also another motivation to deactivate the mvc instrumentation is because I see duplicated span when using spring boot with the default configurations (spring mvc enable by default), one from org.springframework.boot and another from io.opentelemetry.spring-webmvc-6.0, is this expected?

It is expected. You are most likely better off choosing either otel or micrometer tracing and using whichever you like. Enabling both will result in duplicate telemetry.