0.27.0 Release

See changelog for individual crates to know the exact set of changes. All crates in this repo follows same version (0.27.0 for this release).

This release also upgrades

• Logs API to RC
• Metrics API to RC
• Metrics SDK to Beta
• Metrics OTLP Exporter to Beta.

opentelemetry-proto v0.26.1 patch release

Refer to opentelemetry-proto CHANGELOG for the changes.

0.26.0 Release

See changelog for individual crates to know the exact set of changes. As informed during previous release, all crates from this repo follows same version (0.26.0 for this release).
This release also upgrades Metric API (part of opentelemetry crate) from alpha to beta.

OpenTelemetry 0.25.0 Release

See changelog for individual crates to know the exact set of changes. This release onwards, all crates from this repo follows same version (0.25.0 for today's release).

opentelemetry-sdk v0.24.1 patch release

Refer to opentelemetry-sdk CHANGELOG for the changes.

opentelemetry-0.24.0

See individual crate changelogs for details.

0.23.0

Whats changed?

See individual crate changelogs for details.

New Contributors

@svix-jplatte made their first contribution in #1568
@rex4539 made their first contribution in #1587
@divergentdave made their first contribution in #1584
@pyohannes made their first contribution in #1578
@masato-hi made their first contribution in #1621
@rogercoll made their first contribution in #1624
@LuisOsta made their first contribution in #1638
@svrnm made their first contribution in #1664
@Lev1ty made their first contribution in #1672
@ThomsonTan made their first contribution in #1675
@ramgdev made their first contribution in #1585
@utpilla made their first contribution in #1701
@ChieloNewctle made their first contribution in #1746

0.22.1 of OpenTelemetry sdk

Fixed
#1576 Fix Span kind is always set to "internal".

v0.22.0

API

Added

• #1410 Add experimental synchronous gauge. This is behind the feature flag, and can be enabled by enabling the feature otel_unstable for opentelemetry crate.

• #1410 Guidelines to add new unstable/experimental features.

Changed

• Modified AnyValue.Map to be backed by HashMap instead of custom OrderMap, which internally used IndexMap. There was no requirement to maintain the order of entries, so moving from IndexMap to HashMap offers slight performance gains, and avoids IndexMap dependency. This affects body and attributes of LogRecord. #1353
• Add TextMapCompositePropagator #1373
• Turned off events for NoopLogger to save on operations #1455

Removed

• Removed OrderMap type as there was no requirement to use this over regular HashMap. #1353
• Remove API for Creating Histograms with signed integers. #1371
• Remove global::shutdown_meter_provider, use SdkMeterProvider::shutdown directly instead (#1412).

SDK

Deprecated

• XrayIdGenerator in the opentelemetry-sdk has been deprecated and moved to version 0.10.0 of the opentelemetry-aws crate.

Added

• #1410 Add experimental synchronous gauge

• #1471 Configure batch log record processor via OTEL_BLRP_* environment variables and via OtlpLogPipeline::with_batch_config

• #1503 Make the documentation for In-Memory exporters visible.

• #1526
  Performance Improvement : Creating Spans and LogRecords are now faster, by avoiding expensive cloning of Resource for every Span/LogRecord.

Changed

• Breaking
  #1313
  #1350
  Changes how Span links/events are stored to achieve performance gains. See
  below for details:

  Behavior Change: When enforcing max_links_per_span, max_events_per_span
  from SpanLimits, links/events are kept in the first-come order. The previous
  "eviction" based approach is no longer performed.

  Breaking Change Affecting Exporter authors:

  SpanData now stores links as SpanLinks instead of EvictedQueue where
  SpanLinks is a struct with a Vec of links and dropped_count.

  SpanData now stores events as SpanEvents instead of EvictedQueue where
  SpanEvents is a struct with a Vec of events and dropped_count.

• Breaking Remove TextMapCompositePropagator #1373. Use TextMapCompositePropagator in opentelemetry API.

• #1375 Fix metric collections during PeriodicReader shutdown

• Breaking #1480 Remove fine grained BatchConfig configurations from BatchLogProcessorBuilder and BatchSpanProcessorBuilder. Use BatchConfigBuilder to construct a BatchConfig instance and pass it using BatchLogProcessorBuilder::with_batch_config or BatchSpanProcessorBuilder::with_batch_config.

• Breaking #1480 Remove mutating functions from BatchConfig, use BatchConfigBuilder to construct a BatchConfig instance.

• Breaking #1495 Remove Batch LogRecord&Span Processor configuration via non-standard environment variables. Use the following table to migrate from the no longer supported non-standard environment variables to the standard ones.

No longer supported	Standard equivalent
OTEL_BLRP_SCHEDULE_DELAY_MILLIS	OTEL_BLRP_SCHEDULE_DELAY
OTEL_BLRP_EXPORT_TIMEOUT_MILLIS	OTEL_BLRP_EXPORT_TIMEOUT
OTEL_BSP_SCHEDULE_DELAY_MILLIS	OTEL_BSP_SCHEDULE_DELAY
OTEL_BSP_EXPORT_TIMEOUT_MILLIS	OTEL_BSP_EXPORT_TIMEOUT

• Breaking 1455 Make the LoggerProvider Owned

  • Logger now takes an Owned Logger instead of a Weak<LoggerProviderInner>
  • LoggerProviderInner is no longer pub (crate)
  • Logger.provider() now returns &LoggerProvider instead of an Option<LoggerProvider>

• 1519 Performance improvements
  when calling Counter::add() and UpDownCounter::add() with an empty set of attributes
  (e.g. counter.Add(5, &[]))

Fixed

• #1481 Fix error message caused by race condition when using PeriodicReader

v0.21.2

Fixed

• Fix delta aggregation metric reuse. (#1434)
• Fix max_scale validation of exponential histogram configuration. (#1452)