Sourced from opentelemetry-semconv's releases.

Version 1.16.0

API

• Fix bug ImmutableKeyValuePairs implementation that causes ArrayIndexOutOfBoundsException to be thrown under certain conditions.

SDK

Traces

• Optimize BatchSpanProcessor using JcTools.

Metrics

• Tighten up exponential histogram implementation for alignment with specification: Default to 160 positive and negative buckets. Remove ability to configure starting scale. Minimum number of buckets is one instead of zero.
• Allow MetricExporter and MetricReader to influence default aggregation. The default aggregation is used when no registered views match an instrument.

Exporter

• Fix handling of client keys in PEM format.
• For OTLP exporters, change behavior to use OkHttpGrpcExporter (OkHttp implementation that doesn't use any gRPC dependencies) unless OtlpGrpc{Signal}Builder#setChannel(ManagedChannel) is called by user. Previously, OkHttpGrpcExporter was used if no gRPC implementation was found on classpath.
• Add support to configure default aggregation on OTLP metric exporters via Otlp{Protocol}MetricExporterBuilder#setDefaultAggregationSelector(DefaultAggregationSelector).

Testing

• Add span status assertions.

SDK Extensions

• Autoconfigure properly handles non-string system properties.
• Autoconfigure normalizes hyphens - to periods . when accessing ConfigProperties.

OpenTracing Shim

• Add support for span wrappers.
• Store OpenTracing SpanContext in OpenTracing Span wrapper.
• Use Baggage of active span.

🙇 Thank you

This release was possible thanks to the following contributors who shared their brilliant ideas and awesome pull requests:

@​aaron-ai @​anuraaga @​breedx-splk @​carlosalberto @​codeboten @​cuichenli @​fax4ever @​HaloFour @​jack-berg

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Sourced from opentelemetry-semconv's changelog.

Changelog

Unreleased

Version 1.17.0 (2022-08-12)

API

API Extensions

• DEPRECATION: the opentelemetry-extension-annotations module containing @WithSpan and @SpanAttribute annotations has been deprecated for removal in next major version. A copy of the code will instead be maintained in opentelemetry-java-instrumentation/instrumentation-annotations and published under coordinates io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations:{version}.

SDK

Traces

• Add default implementation for SpanData#getInstrumentationScopeInfo() and ReadableSpan#getInstrumentationScopeInfo(). This fixes a previous mistake where those interfaces were extended without default implementation, a breaking change for source compatibility. Stricter checks have been added to ensure this mistake is not repeated.

Logs

• BREAKING: delete LogDataBuilder. A similar implementation of LogData called TestLogData has been added to opentelemetry-sdk-logs-testing.
• BREAKING: rename LogProcessor#emit(LogData) to LogProcessor#onEmit(ReadWriteLogRecord). The argument change from LogData to ReadWriteLogRecord allows implementations to mutate logs. To obtain LogData, call ReadWriteLogRecord#toLogData().
• Optimize SdkLogEmitterProvider to return noop LogEmitter when no LogProcessors are registered.

Exporter

• Split out shared and internal exporter classes from opentelemetry-exporter-otlp-common to opentelemetry-exporter-common.
• Add experimental support for OTLP header based authentication. To use, add a dependency on opentelemetry-exporter-common and call io.opentelemetry.exporter.internal.auth.Authenticator#setAuthenticatorOnDelegate(OtlpHttp{Signal}Builder, Authenticator).
• Add ability to collect export metrics on ZipkinSpanExporter via ZipkinSpanExporter#setMeterProvider(MeterProvider).
• Minor optimization to OkHttp based exporters to cache endpoint URLs. Applies to OtlpHttp{Signal}Exporter, OtlpGrpc{Signal}Exporter, and more.
• Fix diagnostic log message in OtlpGrpc{Signal}Exporter to include correct environment variables.

SDK Extensions

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