OpenTelemetry - java

General

• Examples moved to opentelemetry-java-docs

SDK

Exporter

• Switch Jaeger remote sampler to use grpc lite
• Deprecate .setChannel(ManagedChannel) methods on OTLP gRPC exporters
• Deprecate .setChannel(ManagedChannel) methods on Jaeger gRPC exporter
• Experimental OTLP retry support now retries on connection timeouts

Metrics

• BREAKING Change: Deprecated InMemoryMetricExporter and InMemoryMetricReader have been removed. Use versions in opentelemetry-sdk-metrics-testing instead
• Deprecate InstrumentType values OBSERVABLE_SUM and OBSERVABLE_UP_DOWN_SUM in favor of OBSERVABLE_COUNTER and OBSERVABLE_UP_DOWN_COUNTER

Logs

• Add ability to configure log attribute limits via SdkLogEmitterProviderBuilder#setLogLimits(..)

SDK Extensions

• Auto-configuration added options to AutoConfigurationCustomizer for customizing SdkTracerProviderBuilder, SdkMeterProviderBuilder, MetricExporter, SdkLogEmitterProviderBuilder, and LogExporter
• Auto-configuration added option to skip shutdown hooks
• Auto-configuration adjusted the execution order of tracer and meter provider customization to happen after autoconfiguration
• Auto-configuration adjusted SPI factories to evaluate lazily
• Auto-configuration now uses sets configured SdkMeterProvider on BatchLogProcessor and BatchSpanProcessor
• Auto-configuration deprecated SdkTracerProviderConfigurer in favor of AutoConfigurationCustomizer#addTracerProviderCustomizer(..)