OpenTelemetry - CNCF/opentelemetry-specification: Release v1.8.0

Name: opentelemetry-specification

Owner: OpenTelemetry - CNCF

Release: Release v1.8.0

Released: 2021-11-12

License: Apache-2.0

Release Assets:

v1.8.0 (2021-11-12)

Context

  • Add a section for OTel specific values in TraceState. (#1852)
  • Add none as a possible value for OTEL_PROPAGATORS to disable context propagation. (#2052)

Traces

  • No changes.

Metrics

  • Add optional min / max fields to histogram data model. (#1915, #1983)
  • Add exponential histogram to the metrics data model. (#1935)
  • Add clarifications on how to handle numerical limits. (#2007)
  • Add environment variables for Periodic exporting MetricReader. (#2038)
  • Specify that the SDK must support exporters to access meter information. (#2040)
  • Add clarifications on how to determine aggregation temporality. (#2013, #2032)
  • Mark Metrics API spec as Stable. (#2104)
  • Clarify, fix and expand documentation sections: (#1966), (#1981), (#1995), (#2002), (#2010)

Logs

  • Fix Syslog severity number mapping in the example. (#2091)
  • Add log.* attributes. (#2022)

Resource

  • No changes.

Semantic Conventions

  • Add k8s.container.restart_count Resource attribute. (#1945)
  • Add "IBM z/Architecture" (s390x) to host.arch (#2055)
  • BREAKING: Remove db.cassandra.keyspace and db.hbase.namespace, and clarify db.name (#1973)
  • Add AWS App Runner as a cloud platform (#2004)
  • Add Tencent Cloud as a cloud provider. (#2006)
  • Don't set Span.Status for 4xx http status codes for SERVER spans. (#1998)
  • Add attributes for Apache RocketMQ. (#1904)
  • Define http tracing attributes provided at span creation time (#1916)
  • Change meaning and discourage use of faas.trigger for FaaS clients (outgoing). (#1921)
  • Clarify difference between container.name and k8s.container.name (#1980)

Compatibility

  • No changes.

OpenTelemetry Protocol

  • Clarify default for OTLP endpoint should, not must, be https (#1997)
  • Specify the behavior of the OTLP endpoint variables for OTLP/HTTP more strictly (#1975, #1985)
  • Make OTLP/HTTP the recommended default transport (#1969)

SDK Configuration

  • Unset and empty environment variables are equivalent. (#2045)

Telemetry Schemas

  • Added telemetry schemas documents to the specification (#2008)

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