Release v1.20.0

v1.20.0 (2023-04-07)

Context

• No changes.

Traces

• Clarify required parent information in ReadableSpan. Technically a relaxation,
  but previously it was easy to overlook certain properties were required.
  (#3257)
• Remove underspecified and unused Span decorator from Trace SDK.
  (#3363)

Metrics

• Clarify that units should use UCUM case sensitive variant.
  (#3306)
• Remove No-Op instrument and Meter creation requirements.
  (#3322)

Logs

• Update log readme "request context" to "trace context".
  (#3332)
• Remove log readme document status.
  (#3334)
• Break out compatibility document on recording trace context in non-OTLP Log Format
  (#3331)
• Ensure Logs Bridge API doesn't contain SDK implementation details
  (#3275)
• Add Log Bridge API artifact naming guidance
  (#3346)
• Add log appender / bridge to glossary.
  (#3335)

Resource

• No changes.

Semantic Conventions

• Clarify that attribute requirement levels apply to the instrumentation library
  (#3289)
• Fix grammatical number of metric units.
  (#3298)
• Rename net.app.protocol.(name|version) to net.protocol.(name|version)
  (#3272)
• Replace http.flavor with net.protocol.(name|version)
  (#3272)
• Metric requirement levels are now stable
  (#3271)
• BREAKING: remove messaging.destination.kind and messaging.source.kind.
  (#3214,
  #3348)
• Define attributes collected for cosmosdb by Cosmos DB SDK
  (#3097)
• Clarify stability requirements of semantic conventions
  (#3225)
• BREAKING: Change span statuses for gRPC server spans.
  (#3333)
• Stabilize key components of service.* and telemetry.sdk.* resource
  semantic conventions.
  (#3202)
• Fixed attributes requirement level in semantic conventions for hardware metrics
  (#3258)
• Added AWS S3 semantic conventions.
  (#3251)
• Fix units in the Kafka metric semantic conventions.
  (#3300)
• Add Trino to Database specific conventions
  (#3347)
• Change db.statement to only be collected if there is sanitization.
  (#3127)
• BREAKING: Remove http.status_code attribute from the
  http.server.active_requests metric.
  (#3366)
• Mark attribute requirement levels as stable
  (#3368)

Compatibility

• No changes.

OpenTelemetry Protocol

• Declare OTLP stable.
  (#3274)

SDK Configuration

• No changes.

Telemetry Schemas

• No changes.

Common

• No changes.

New Contributors

• @codyborders made their first contribution in #3305
• @JamieDanielson made their first contribution in #3292
• @sourabh1007 made their first contribution in #3097
• @AlexanderWert made their first contribution in #3251
• @Kielek made their first contribution in #3348
• @electrum made their first contribution in #3347
• @avzis made their first contribution in #3127