Priority Sampling
Priority sampling is a new feature for sampling traces. #192
- The sampling rate is set per service name by the core agent.
- Additionally, a priority flag is propagated for external calls between java hosts.
- This allows sampled traces to be saved across external calls.
- Requires the Datadog Agent 5.19 or greater.
- Further reading: https://github.com/DataDog/datadog-trace-agent/wiki/Distributed-Priority-Sampling
Bugfixes
- Log exceptions to datadog debug log instead of stderr #196
- Defend against NPEs in Spring Instrumentation #195
Internal Changes
- Test Java 7 and 9 in CI #201