Improvements

Breaking Changes

HTTP error statuses in Config have been changed from Set<Integer> to BitSet - this change will require version parity between dd-java-agent and dd-trace-api and modifies an internal API that most likely users do not depend on, but no configuration changes are required.

• [Performance] replace Set with BitSet for HTTP statuses #1496

Changes

• [Performance] reduce the number of ConcurrentHashMap lookups per span in rule processing #1504
• Do not start profiling if API key doesn't look correct #1502
• [Performance] intern more common UTF-8 string encodings #1488
• record time spent in Kafka queue #1481
• Register WeakMapProvider earlier in AgentInstaller #1480
• add {"_dd.measured":1} to every integration individually #1362

Fixes

• Allow traces to be reported if continuations are GC'd before activation. #1493