What is not traced

[pavolloffay]

Server

• URLs without mapping. see also Integrate with servlet filter #13
• exceptions in handlers. see also Integrate with servlet filter #13, Test exception in handler #50 - Traced by servlet filter SpanFinishingFilter.
• Exceptions added to AsyncResponse#resume() are not propagated to onComplete or onError async callbacks

Client

• interceptors do not catch UnknownHostException Client does not trace error states like UnknownHostException #30
• some impls do not allow to specify custom ExecutorService (which propagates active span), therefore when invoking multiple async requests at the same time created spans can have a wrong parent Apache CXF client set custom ExecutorService #37 CXF does not support this but it invokes filters in the same thread, however async response filter is executed in a different thread so it cannot close scopes!

[pavolloffay]

• Resteasy/CXF does not propagate correct status code (always 200) on exceptions https://issues.jboss.org/browse/RESTEASY-1758