OpenTelemetry - CNCF/opentelemetry-specification: Release v1.21.0

Name: opentelemetry-specification

Owner: OpenTelemetry - CNCF

Release: Release v1.21.0

Released: 2023-05-16

License: Apache-2.0

Release Assets:

v1.21.0 (2023-05-17)

Context

  • No changes.

Traces

  • No changes.

Metrics

  • Add experimental histogram advice API. (#3216)
  • Recommended non-prefixed units for metric instrument semantic conventions. (#3312)
  • Recommended cardinality limits to protect metrics pipelines against excessive data production from a single instrument. (#2960)
  • Add links to the JMX APIs that are the JVM runtime metric sources. (#3463)

Logs

  • Clarify parameters for emitting a log record. (#3345)
  • Drop logger include_trace_context parameter. (#3397)
  • Clarify how ObservedTimestamp field is set if unspecified (#3385)
  • Mark logs bridge API / SDK as stable. (#3376)
  • Mark LogRecord Environment Variables as stable. (#3449)

Resource

  • No changes.

Semantic Conventions

Compatibility

  • Mark OpenCensus compatibility spec as stable (#3425)

OpenTelemetry Protocol

  • No changes.

SDK Configuration

  • Lay initial groundwork for file configuration (#3360)
  • Move file configuration schema to opentelemetry-configuration. (#3412)
  • Move sdk-configuration.md and sdk-environment-variables.md to /specification/configuration/. (#3434)

Telemetry Schemas

  • No changes.

Common

  • Add log entries to specification README.md contents. (#3435)

Supplementary Guidelines

  • Add guidance to use service-supported propagation formats as default for AWS SDK client calls. (#3212)

New Contributors

Full Changelog: https://github.com/open-telemetry/opentelemetry-specification/compare/v1.20.0...v1.21.0

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