Improvements

Core

• Single Span Sampling #4031
• Baggage Mapping #4404 (Thanks @Xyaren for the contribution!)
• Add process_id to all root spans #4397
• Add HealthMetrics for PendingTrace #3883
• Add metric for serialization failure #4449
• Add correlation id injection to dd-trace-ot #4396
• Add MDC injection config support to dd-trace-ot #4414

Integrations

• Improve resource naming for spring data repositories #4411

Profiling

• Enable async-profiler by default #4447
• Upgrade to async-profiler 20221216 #4441
• Report when we collect native stacks #4394

Debugger

• Add span probe configuration #4412

Native Image

• Activate tracer when native-image runtime starts #4437

Serverless

• Capture lambda response #4380

Build

• Fix rmic gradle task to use binary provided by Java 8 JDK #4401 (Thanks @monosoul for the contribution!)

Changes

Core

• Change error tag name from error.msg to error.message #4398

Profiling

• Remove unnecessary fields from endpoint events #4391
• Remove scope events #4392

Miscellaneous

• Upgrade byte-buddy to 1.12.20 #4445 and #4383

Performance

Core

• Change metrics queue implementation #4409
• Introduce named presets for the resolver cache, to make it easier to configure #4408
• Avoid EnvAndService allocation on lookup triggered by setSamplingPriority call #4428

Fixes

Integrations

• Prevent IllegalAccessError in OpenJDK 17.0.4 by excluding javax.management.* & javax.swing.* #4422
• Fix spring webflux route extraction + improve webflux tests #4390
• Use host header to fill undertow http tags #4439

AppSec

• Openliberty: fix NPE after blocking response #4431

Telemetry

• Changed dependency detection resolver log level from warn to debug #4413

Remote Config

• Fixed NPE if the remote config is absent #4385