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CHANGELOG.md

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Changelog

Unreleased

0.7.0 - 2020-08-02

NOTE: This release contains non-backward-compatible breaking SDK changes

  • Added an InMemoryMetricExporter
  • Added a toBuilder method to Labels
  • Added some semantic attribute constants
  • New ZPages extension module with TraceZ and TraceConfigZ pages implemented
  • Some overloads added for setting the parent Context
  • Some performance improvements in HttpTraceContext implementation
  • Removed null checks from the Trace APIs
  • The bare API will no longer generate Trace and Span IDs when there is no parent trace context.
  • Null Strings are no longer valid keys for Attributes
  • BREAKING CHANGE: The Sampler API was changed
  • Default endpoint is now set for the OTLP exporters
  • BREAKING CHANGE: Jaeger exporter env vars/system properties were updated
  • Resource attributes may now be set with a System Property as well as the environment variable.
  • Added a propagator for Lightstep OpenTracing propagator
  • The ZipkinSpanExporter now defaults to using the OkHttpSender
  • The default Sampler in the SDK is now the ParentOrElse sampler
  • BUGFIX: SpanWrapper SpanData implementation is now truly Immutable
  • Added some simple logging for failed export calls
  • Quieted the noisy B3 propagator
  • Public constants were added for exporter configuration options
  • Added a new configuration option to limit the size of Span attributes
  • Many thanks for contributions from @anuraaga, @dengliming, @iNikem, @wtyanan, @williamhu99, @trask, @Oberon00, @MitchellDumovic, @FrankSpitulski, @heyams, @ptravers, @thisthat, @albertteoh, @evantorrie, @neeraj97,

0.6.0 - 2020-07-01

NOTE: This release contains non-backward-compatible breaking API and SDK changes

  • Introduction of immutable Attributes for SpansEvents, Links and Resources
  • Introduction of immutable Labels for Metric Instruments and Recordings
  • BUGFIX: make sure null Points are not propagated to metric exporters
  • Added a propagator for AWS X-Ray
  • BUGFIX: IntervalMetricReader now handles exceptions thrown by metric exporters
  • Renamed contrib modules to "extensions" (Note: this changes the published artifact names, as well)
  • Converted CorrelationContext entry keys and values to simple Strings
  • Enhanced OTLP exporter configuration options
  • Added new SDK Telemetry Resource populator
  • Introduced an new MultiTracePropagator to handle multiple propagation formats
  • Added new AWS Resource populators
  • Added an extension to populate span data into log4j2 log formats.
  • Changed the MinMaxSumCount aggregations for ValueRecorders to always aggregate deltas, rather than cumulative
  • Updated the OTLP protobuf and exporter to version 0.4.0 of the OTLP protobufs.

0.5.0 - 2020-06-04

TODO: fill this out

  • Add helper API to get Tracer/Meter

0.4.0 - 2020-05-04

  • Initial implementation of the Zipkin exporter.
  • Breaking change: Move B3 propagator to a contrib package
  • Add support for Jaeger propagator
  • Start implementing support for configuring exporters using Config pattern with support to load from environment variables and system properties.
  • Add support to flush the entire SDK processors and exporter pipelines.
  • Mark all threads/pools as daemon.
  • Add support for Jaeger remote sampler.

0.3.0 - 2020-03-27

  • Initial Java API and SDK for context, trace, metrics, resource.
  • Initial implementation of the Jaeger exporter.
  • Initial implementation of the OTLP exporters for trace and metrics.