Overview

This release is the last to support Go 1.23. The next release will require at least Go 1.24.

Added

• Add native histogram exemplar support in go.opentelemetry.io/otel/exporters/prometheus. (#6772)
• Add template attribute functions to the go.opentelmetry.io/otel/semconv/v1.34.0 package. (#6939)
  • ContainerLabel
  • DBOperationParameter
  • DBSystemParameter
  • HTTPRequestHeader
  • HTTPResponseHeader
  • K8SCronJobAnnotation
  • K8SCronJobLabel
  • K8SDaemonSetAnnotation
  • K8SDaemonSetLabel
  • K8SDeploymentAnnotation
  • K8SDeploymentLabel
  • K8SJobAnnotation
  • K8SJobLabel
  • K8SNamespaceAnnotation
  • K8SNamespaceLabel
  • K8SNodeAnnotation
  • K8SNodeLabel
  • K8SPodAnnotation
  • K8SPodLabel
  • K8SReplicaSetAnnotation
  • K8SReplicaSetLabel
  • K8SStatefulSetAnnotation
  • K8SStatefulSetLabel
  • ProcessEnvironmentVariable
  • RPCConnectRPCRequestMetadata
  • RPCConnectRPCResponseMetadata
  • RPCGRPCRequestMetadata
  • RPCGRPCResponseMetadata
• Add ErrorType attribute helper function to the go.opentelmetry.io/otel/semconv/v1.34.0 package. (#6962)
• Add WithAllowKeyDuplication in go.opentelemetry.io/otel/sdk/log which can be used to disable deduplication for log records. (#6968)
• Add WithCardinalityLimit option to configure the cardinality limit in go.opentelemetry.io/otel/sdk/metric. (#6996, #7065, #7081, #7164, #7165, #7179)
• Add Clone method to Record in go.opentelemetry.io/otel/log that returns a copy of the record with no shared state. (#7001)
• Add experimental self-observability span and batch span processor metrics in go.opentelemetry.io/otel/sdk/trace. Check the go.opentelemetry.io/otel/sdk/trace/internal/x package documentation for more information. (#7027, #6393, #7209)
• The go.opentelemetry.io/otel/semconv/v1.36.0 package. The package contains semantic conventions from the v1.36.0 version of the OpenTelemetry Semantic Conventions. See the migration documentation for information on how to upgrade from go.opentelemetry.io/otel/semconv/v1.34.0.(#7032, #7041)
• Add support for configuring Prometheus name translation using WithTranslationStrategy option in go.opentelemetry.io/otel/exporters/prometheus. The current default translation strategy when UTF-8 mode is enabled is NoUTF8EscapingWithSuffixes, but a future release will change the default strategy to UnderscoreEscapingWithSuffixes for compliance with the specification. (#7111)
• Add experimental self-observability log metrics in go.opentelemetry.io/otel/sdk/log. Check the go.opentelemetry.io/otel/sdk/log/internal/x package documentation for more information. (#7121)
• Add experimental self-observability trace exporter metrics in go.opentelemetry.io/otel/exporters/stdout/stdouttrace. Check the go.opentelemetry.io/otel/exporters/stdout/stdouttrace/internal/x package documentation for more information. (#7133)
• Support testing of [Go 1.25]. (#7187)
• The go.opentelemetry.io/otel/semconv/v1.37.0 package. The package contains semantic conventions from the v1.37.0 version of the OpenTelemetry Semantic Conventions. See the migration documentation for information on how to upgrade from go.opentelemetry.io/otel/semconv/v1.36.0.(#7254)

Changed

• Optimize TraceIDFromHex and SpanIDFromHex in go.opentelemetry.io/otel/sdk/trace. (#6791)
• Change AssertEqual in go.opentelemetry.io/otel/log/logtest to accept TestingT in order to support benchmarks and fuzz tests. (#6908)
• Change DefaultExemplarReservoirProviderSelector in go.opentelemetry.io/otel/sdk/metric to use runtime.GOMAXPROCS(0) instead of runtime.NumCPU() for the FixedSizeReservoirProvider default size. (#7094)

Fixed

• SetBody method of Record in go.opentelemetry.io/otel/sdk/log now deduplicates key-value collections (log.Value of log.KindMap from go.opentelemetry.io/otel/log). (#7002)
• Fix go.opentelemetry.io/otel/exporters/prometheus to not append a suffix if it's already present in metric name. (#7088)
• Fix the go.opentelemetry.io/otel/exporters/stdout/stdouttrace self-observability component type and name. (#7195)
• Fix partial export count metric in go.opentelemetry.io/otel/exporters/stdout/stdouttrace. (#7199)

Deprecated

• Deprecate WithoutUnits and WithoutCounterSuffixes options, preferring WithTranslationStrategy instead. (#7111)
• Deprecate support for OTEL_GO_X_CARDINALITY_LIMIT environment variable in go.opentelemetry.io/otel/sdk/metric. Use WithCardinalityLimit option instead. (#7166)

What's Changed

• chore(deps): update golang.org/x/telemetry digest to 96f361d by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7054
• fix(deps): update googleapis to a45f3df by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7058
• chore(deps): update github/codeql-action action to v3.29.3 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7055
• fix(deps): update module github.com/golangci/golangci-lint/v2 to v2.3.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7060
• chore(deps): update module github.com/securego/gosec/v2 to v2.22.7 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7059
• chore(deps): update python:3.13.5-slim-bullseye docker digest to 89aa817 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7061
• chore(deps): update python:3.13.5-slim-bullseye docker digest to 17c88fd by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7062
• Fix markdown-fail-fast on push by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7057
• sdk/trace: self-observability: span metrics by @pellared in https://github.com/open-telemetry/opentelemetry-go/pull/7027
• chore(deps): update module github.com/ldez/grignotin to v0.10.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7072
• fix(deps): update module google.golang.org/grpc to v1.74.2 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7073
• chore(deps): update python:3.13.5-slim-bullseye docker digest to ba65ee6 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7068
• sdk/metric: do not document default cardinality limit by @pellared in https://github.com/open-telemetry/opentelemetry-go/pull/7065
• docs: unify doc comments for functions returning bool by @pellared in https://github.com/open-telemetry/opentelemetry-go/pull/7064
• fix(deps): update module go.opentelemetry.io/collector/pdata to v1.36.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7070
• fix(deps): update github.com/prometheus/otlptranslator digest to fce6240 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7075
• fix(deps): update module github.com/cenkalti/backoff/v5 to v5.0.3 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7077
• chore(deps): update github/codeql-action action to v3.29.4 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7076
• Add Flc as an approver by @pellared in https://github.com/open-telemetry/opentelemetry-go/pull/7053
• chore(deps): update module go.opentelemetry.io/build-tools to v0.25.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7079
• fix(deps): update build-tools to v0.25.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7080
• chore(deps): update python:3.13.5-slim-bullseye docker digest to 846d391 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7078
• chore(deps): update module github.com/bombsimon/wsl/v5 to v5.1.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7082
• chore(deps): update module github.com/daixiang0/gci to v0.13.7 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7085
• fix(deps): update github.com/prometheus/otlptranslator digest to ab8d56d by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7088
• fix: add mock server URL to .lycheeignore by @flc1125 in https://github.com/open-telemetry/opentelemetry-go/pull/7090
• chore(deps): update module github.com/sonatard/noctx to v0.4.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7092
• chore(deps): update golang.org/x/telemetry digest to 1581f0a by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7096
• fix(deps): update googleapis to f173205 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7097
• chore(deps): update module github.com/4meepo/tagalign to v1.4.3 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7098
• Modernize by @ash2k in https://github.com/open-telemetry/opentelemetry-go/pull/7089
• Remove notice about internaltest which is not generated anymore by @dmathieu in https://github.com/open-telemetry/opentelemetry-go/pull/7093
• sdk/metric: use runtime.GOMAXPROCS(0) instead of runtime.NumCPU() in DefaultExemplarReservoirProviderSelector for the FixedSizeReservoirProvider default size by @lzakharov in https://github.com/open-telemetry/opentelemetry-go/pull/7094
• ci: Add use-any linter by @flc1125 in https://github.com/open-telemetry/opentelemetry-go/pull/7091
• chore: enable gocritic linter by @mmorel-35 in https://github.com/open-telemetry/opentelemetry-go/pull/7095
• chore(deps): update module github.com/sagikazarmark/locafero to v0.10.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7100
• chore(deps): update golang.org/x/telemetry digest to 28f32e4 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7099
• fix(deps): update module go.opentelemetry.io/collector/pdata to v1.37.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7101
• fix(deps): update build-tools to v0.26.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7105
• chore(deps): update github/codeql-action action to v3.29.5 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7103
• Fix names in experimental readmes by @pellared in https://github.com/open-telemetry/opentelemetry-go/pull/7106
• fix(deps): update module go.opentelemetry.io/proto/otlp to v1.7.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7108
• fix(deps): update module github.com/prometheus/client_golang to v1.23.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7109
• Add changelog entry for version bump of otlptranslator - suffixes are now deduplicated by @ArthurSens in https://github.com/open-telemetry/opentelemetry-go/pull/7086
• fix(deps): update module github.com/golangci/golangci-lint/v2 to v2.3.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7118
• chore: enable extra-rules from gofumpt by @mmorel-35 in https://github.com/open-telemetry/opentelemetry-go/pull/7114
• chore(deps): update module github.com/alecthomas/chroma/v2 to v2.20.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7125
• fix(deps): update googleapis to a7a43d2 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7126
• sdk/metric: Apply Cardinality Limits to Aggregations by @ysolomchenko in https://github.com/open-telemetry/opentelemetry-go/pull/7081
• chore: enable unused-parameter rule from revive by @mmorel-35 in https://github.com/open-telemetry/opentelemetry-go/pull/7122
• Add support for native histogram exemplars by @shivanthzen in https://github.com/open-telemetry/opentelemetry-go/pull/6772
• chore(deps): update golang.org/x/telemetry digest to 9469f96 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7134
• chore(deps): update module github.com/charmbracelet/x/ansi to v0.10.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7135
• Testing: Run sync measure benchmarks in parallel by @dashpole in https://github.com/open-telemetry/opentelemetry-go/pull/7113
• chore(deps): update actions/download-artifact action to v5 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7136
• Add benchmark for map access using attribute Equivalent by @dashpole in https://github.com/open-telemetry/opentelemetry-go/pull/7123
• Add security insights document to repository by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7129
• sdk/log: self-observability: log created metric by @mahendrabishnoi2 in https://github.com/open-telemetry/opentelemetry-go/pull/7121
• fix(deps): update golang.org/x by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7138
• chore(deps): update actions/cache action to v4.2.4 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7140
• fix(deps): update module google.golang.org/protobuf to v1.36.7 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7141
• chore(deps): update lycheeverse/lychee-action action to v2.5.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7143
• chore(deps): update github/codeql-action action to v3.29.6 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7144
• chore(deps): update golang.org/x/telemetry digest to 01f7bf4 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7146
• chore(deps): update golang.org/x by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7147
• chore: enable ptrToRefParam from go-critic by @mmorel-35 in https://github.com/open-telemetry/opentelemetry-go/pull/7131
• chore(deps): update python docker tag to v3.13.6 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7148
• chore(deps): update golang.org/x by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7149
• chore(deps): update python:3.13.6-slim-bullseye docker digest to e98b521 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7151
• chore(deps): update github/codeql-action action to v3.29.7 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7152
• chore(deps): update github/codeql-action action to v3.29.8 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7156
• fix(deps): update golang.org/x by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7153
• fix(deps): update golang.org/x/exp digest to a408d31 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7158
• fix(deps): update module github.com/prometheus/otlptranslator to v0.0.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7159
• chore: enable unused-receiver rule from revive by @mmorel-35 in https://github.com/open-telemetry/opentelemetry-go/pull/7130
• feat(stdouttrace): add experimental self-observability metrics by @flc1125 in https://github.com/open-telemetry/opentelemetry-go/pull/7133
• chore(deps): update actions/checkout action to v5 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7168
• sdk/log: Add EventNameProcessor example by @pellared in https://github.com/open-telemetry/opentelemetry-go/pull/7128
• chore(deps): update otel/weaver docker tag to v0.17.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7163
• fix(deps): update googleapis to 6b04f9b by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7169
• chore(deps): update module go.opentelemetry.io/build-tools to v0.26.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7170
• sdk/trace: self-observability: batch span processor metrics by @dashpole in https://github.com/open-telemetry/opentelemetry-go/pull/6393
• fix(deps): update build-tools to v0.26.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7171
• Add subscript to issue templates by @opentelemetrybot in https://github.com/open-telemetry/opentelemetry-go/pull/7116
• fix(deps): update golang.org/x to 51f8813 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7173
• Upgrade semconv gen to weaver v0.17.0 by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7172
• sdk/metric: Add Unit Tests for Cardinality Limits by @ysolomchenko in https://github.com/open-telemetry/opentelemetry-go/pull/7164
• sdk/metric: Deprecate the sdk/metric/x Feature Supporting Cardinality Limits by @ysolomchenko in https://github.com/open-telemetry/opentelemetry-go/pull/7166
• sdk/metric: package example includes Cardinality Limits by @ysolomchenko in https://github.com/open-telemetry/opentelemetry-go/pull/7165
• fix(deps): update module go.opentelemetry.io/collector/pdata to v1.38.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7177
• chore(deps): update module go-simpler.org/musttag to v0.14.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7178
• fix(deps): update googleapis to 5f3141c by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7176
• chore(deps): update github/codeql-action action to v3.29.9 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7181
• Support Go 1.25 by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7187
• ci(benchmarks): switch runner to Oracle bare metal by @tdn21 in https://github.com/open-telemetry/opentelemetry-go/pull/7183
• chore(deps): update module github.com/charmbracelet/colorprofile to v0.3.2 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7190
• chore(deps): update module go.opentelemetry.io/build-tools to v0.26.2 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7191
• fix(deps): update build-tools to v0.26.2 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7192
• chore(deps): update otel/weaver docker tag to v0.17.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7207
• Use the context passed to ExportSpans for measurements in stdouttrace by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7198
• Flatten stdouttrace Exporter.initSelfObservability into Exporter.New by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7197
• Fix component name for stdouttrace by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7195
• Restructure component ID counting in stdouttrace by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7196
• chore(deps): update module go.augendre.info/fatcontext to v0.8.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7213
• sdk/trace: do not defer if not self-observing by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7206
• Flatten tracer.initSelfObservability into TracerProvider.Tracer by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7205
• Fix minor grammatical error in sdk/trace/internal/x README.md by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7211
• Fix minor grammatical error in stdouttrace by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7202
• Fix callbackAttributesOpt variable name by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7210
• Fix minor grammatical error in Distinct docs by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7203
• Use t.Cleanup instead of defer in stdouttrace by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7204
• Use t.Cleanup instead of defer in sdk/trace by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7208
• chore(deps): update github/codeql-action action to v3.29.10 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7214
• Handle partial export counts in stdouttrace observability by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7199
• Pool attribute slices in stdouttrace self-observability by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7201
• fix(deps): update googleapis to 3122310 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7216
• chore(deps): update module github.com/kevinburke/ssh_config to v1.4.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7219
• fix(deps): update module google.golang.org/grpc to v1.75.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7220
• chore(deps): update module github.com/grpc-ecosystem/grpc-gateway/v2 to v2.27.2 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7224
• fix(deps): update module google.golang.org/protobuf to v1.36.8 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7225
• chore(deps): update codecov/codecov-action action to v5.5.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7227
• chore(deps): update github/codeql-action action to v3.29.11 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7229
• sdk/trace: More trace id tests by @bboreham in https://github.com/open-telemetry/opentelemetry-go/pull/7155
• chore(deps): update github.com/golangci/golines digest to d4663ad by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7238
• chore(deps): update lycheeverse/lychee-action action to v2.6.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7239
• feat(stdouttrace): generate counter implementation via templates by @yumosx in https://github.com/open-telemetry/opentelemetry-go/pull/7231
• refactor(logger): Flatten logger.initSelfObservability into logger.newLoggerr and use t.Cleanup instead of defer by @yumosx in https://github.com/open-telemetry/opentelemetry-go/pull/7228
• fix(deps): update module github.com/stretchr/testify to v1.11.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7242
• chore(deps): update lycheeverse/lychee-action action to v2.6.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7243
• Wrap Float64ObservableCounter with system.CPUTime by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7235
• Fix CPUModeSystem variable name by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7233
• Return early in semconv generated packages if no attributes passed by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7222
• [chore] Upgrade semconv pkg use to v1.36.0 by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7237
• fix: correct package import paths by @flc1125 in https://github.com/open-telemetry/opentelemetry-go/pull/7244
• sdk/metric: Add Documentation for Cardinality Limits by @ysolomchenko in https://github.com/open-telemetry/opentelemetry-go/pull/7179
• sdk/log: Deduplicate key-value collections in Record.SetBody by @Mojachieee in https://github.com/open-telemetry/opentelemetry-go/pull/7002
• fix(deps): update google.golang.org/genproto/googleapis/rpc digest to c5933d9 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7246
• chore(deps): update google.golang.org/genproto/googleapis/api digest to c5933d9 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7250
• Add copyright header to generated semconv packages by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7248
• Clarify overflow attribute description in doc.go to indicate it is boolean true by @cijothomas in https://github.com/open-telemetry/opentelemetry-go/pull/7247
• trace: optimize id parsing and string functions by @jschaf in https://github.com/open-telemetry/opentelemetry-go/pull/6791
• Propagate context to self-observability measurements in sdk/trace by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7209
• Amortize measurement option allocations by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7215
• Add AddSet and RecordSet methods to semconv generated packages by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7223
• chore(deps): update module github.com/ldez/tagliatelle to v0.7.2 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7253
• chore(deps): update module go.opentelemetry.io/build-tools to v0.27.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7257
• chore(deps): update module github.com/gordonklaus/ineffassign to v0.2.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7259
• Generate the semconv/v1.37.0 packages by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7254
• prometheus: Add support for setting Translation Strategy config option by @ywwg in https://github.com/open-telemetry/opentelemetry-go/pull/7111
• fix(deps): update module github.com/stretchr/testify to v1.11.1 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7261
• Upgrade semconv dependencies to v1.37.0 by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7260
• Add benchmark for set equality by @dashpole in https://github.com/open-telemetry/opentelemetry-go/pull/7262
• chore(deps): update module github.com/mgechev/revive to v1.12.0 by @renovate[bot] in https://github.com/open-telemetry/opentelemetry-go/pull/7269
• Refactor BSP observability setup by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7264
• Statically define trace observability attributes by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7263
• Add tests for attribute JSON marshalling by @dashpole in https://github.com/open-telemetry/opentelemetry-go/pull/7268
• Release v1.38.0 by @MrAlias in https://github.com/open-telemetry/opentelemetry-go/pull/7271

New Contributors

• @lzakharov made their first contribution in https://github.com/open-telemetry/opentelemetry-go/pull/7094
• @ArthurSens made their first contribution in https://github.com/open-telemetry/opentelemetry-go/pull/7086
• @shivanthzen made their first contribution in https://github.com/open-telemetry/opentelemetry-go/pull/6772
• @mahendrabishnoi2 made their first contribution in https://github.com/open-telemetry/opentelemetry-go/pull/7121
• @tdn21 made their first contribution in https://github.com/open-telemetry/opentelemetry-go/pull/7183
• @cijothomas made their first contribution in https://github.com/open-telemetry/opentelemetry-go/pull/7247
• @ywwg made their first contribution in https://github.com/open-telemetry/opentelemetry-go/pull/7111

Full Changelog: https://github.com/open-telemetry/opentelemetry-go/compare/exporters/prometheus/v0.59.1...v1.38.0