3.4.1

Type	Description	Link
Fix	Replace Trace headers instead of appending them.	#350

3.4.0

Type	Description	Link
Improvement	Tracers.wrapListenableFuture utility to wrap ListenableFutures with detached spans	#328

3.3.0

Type	Description	Link
Improvement	Tracing aware executors wrap Runnables and Callables more cleanly	#310

3.2.0

Type	Description	Link
Improvement	Implement asynchronous operation tracing using DetachedSpan.	#124
Fix	tracing-test-utils: Fix ordering bugs in SpanAnalyser, and correctly serde span type.	#250

3.2.0-rc2

Type	Description	Link
Improvement	Implement asynchronous operation tracing using DetachedSpan.	#124

3.2.0-rc1

Type	Description	Link
Feature	Create new tracing-test-utils package which allows you to render traces and snapshot test them.	#235

3.1.0

Type	Description	Link
Improvement	Add originating span id to requests in order to enable request log tracing	#206

3.0.0

Type	Description	Link
Break	Removed jackson-databind and jackson-annotations from tracing-api.	#209

2.16.0

This release introduces new Tracer.fastStartSpan alternative to startSpan for invocations which do not need the returned OpenSpan object. Error prone will helpfully validate that startSpan is only used when the return value is checked.

• [improvement] use of factory method to avoid OpenSpan.Builder allocations (#167)
• [improvement] Tracer spans are inexpensive for unsampled operations (#180)

2.15.0

[improvement] Refactor Tracer.initTrace to take enum instead of optional boolean (#166)
[improvement] Allow setting observable flag when wrapping with new trace (#163)