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open-telemetry/opentelemetry-specificationv1.x
62 releases

TL;DR

The OpenTelemetry specification now includes a Profiles data model, enabling the collection and analysis of performance profiles (application performance data).

New

  • Profiles Data Model: A new data model for collecting and exporting performance profiles is now available.
  • Policies: The specification introduces Policies, offering a standardized way to manage telemetry behavior.

Fixes Worth Knowing

  • Added an example mapping for ETW (Event Tracing for Windows) to the logs data model, improving Windows logging integration.
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open-telemetry/opentelemetry-specificationv0.x
7 releases

TL;DR

The OpenTelemetry specification has been significantly updated, freezing the Trace API and introducing extensive semantic conventions and API refinements across tracing, metrics, and baggage management to improve data richness and interoperability.

Breaking

  • Span Context Parent: Only a full Context can now be used to specify a parent Span; SpanContext is no longer accepted.
  • Lazy Span APIs Removed: Implementations should remove any existing lazy Event and Link APIs to avoid future conflicts.
  • HTTP Status Text: The http.status_text attribute has been removed from semantic conventions.
  • Null Values: null is now explicitly invalid for attributes, leading to undefined behavior if attempted.
  • Sampler Decisions: Sampler Decision values have been renamed to DROP, RECORD_ONLY, and RECORD_AND_SAMPLE.
  • Metric Aggregation: "Additive" and "Non-Additive" terms in the Metrics API are now "Adding" and "Grouping" respectively.
  • Baggage Header: The custom header name for baggage has been removed; use the official header instead.

New

  • Exception Events: Added API and
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