[API/SDK] feat: exemplar filters#4191

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proost wants to merge 50 commits into

open-telemetry:mainfrom

proost:feat-exemplar-filters

Commits on Jul 18, 2026

[API] fix the trace state regex to comply with the w3c trace context level 2 (#4194)

dbarker
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[CODE HEALTH] Move trace and baggage propagation test classes into anonymous namespace (#4199)
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[CMAKE] Add pkg-config support for OpenTelemetry proto installation (#4192)

owent
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[CMAKE] Fix CMake WITH_API_ONLY option (#4201)

dbarker
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[CODE HEALTH] Move context propagation test classes into anonymous namespace (#4200)

mateenali66
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[CODE HEALTH] Fix clang-tidy bugprone-unused-local-non-trivial-variable warnings (#4202)

thc1006
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[SDK] LogRecord attribute limits enforcement (#4157)

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[SDK] Rename ComposableTraceIdRatioBasedSampler to ComposableProbabilitySampler (#4210)

BlackPool25
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Bump docker/build-push-action from 7.2.0 to 7.3.0 (#4204)

dependabot[bot]
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Bump docker/setup-qemu-action from 4.1.0 to 4.2.0 (#4205)

dependabot[bot]
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Bump docker/setup-buildx-action from 4.1.0 to 4.2.0 (#4207)

dependabot[bot]
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Bump rules_cc from 0.2.20 to 0.2.21 (#4214)

dependabot[bot]
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Bump github/codeql-action/upload-sarif from 4.36.2 to 4.36.3 (#4213)

dependabot[bot]
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Bump fossas/fossa-action from 1.9.0 to 2.0.0 (#4212)

dependabot[bot]
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Bump github/codeql-action/init from 4.36.2 to 4.36.3 (#4209)

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[CODE HEALTH] Move api/test and sdk/test classes into anonymous namespace (#4217)

thc1006
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[CODE HEALTH] Fix clang-tidy bugprone-unchecked-string-to-number-conversion warnings (#4216)

thc1006
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[CODE HEALTH] Fix clang-tidy misc-override-with-different-visibility warnings (#4215)

thc1006
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[BUILD] add missing link dependency for bazel (#4220)

grrtrr
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[CODE HEALTH] Fix clang-tidy `bugprone-throwing-static-initialization` warnings (#4206)

RaviTriv
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Bump rules_cc from 0.2.21 to 0.2.22 (#4223)

dependabot[bot]
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Bump step-security/harden-runner from 2.19.4 to 2.20.0 (#4222)

dependabot[bot]
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Bump bazel-contrib/publish-to-bcr/.github/workflows/publish.yaml (#4221)

dependabot[bot]
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[CODE HEALTH] Move ext and exporters test classes into anonymous namespace (#4225)

mateenali66
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Bump github/codeql-action/upload-sarif from 4.36.3 to 4.37.0 (#4227)

dependabot[bot]
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Bump github/codeql-action/init from 4.36.3 to 4.37.0 (#4229)

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[SEMANTIC CONVENTIONS] Upgrade to semconv 1.43.0 (#4230)

marcalff
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[CODE HEALTH] Move otlp, zipkin and prometheus test classes into anonymous namespace (#4231)

mateenali66
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[BAZEL] Upgrade to rapidyaml 1.15.2 (#4234)

marcalff
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[BENCHMARK] add SpanData recordable benchmark and unify common utils (#4203)

dbarker
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[CI] Add `modernize-` and `cppcoreguidelines-pro-` checks to clang-tidy (#4238)

dbarker
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[METRICS SDK] Apply cardinality limits only to non-overflow attributesets (#4236)

ThomsonTan
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[CONFIGURATION] fix yaml configuration of the logger configurator (#4241)

dbarker
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[SDK] Support LoggerConfigurator updates and example (#4224)

dbarker
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Bump actions/stale from 10.3.0 to 10.4.0 (#4242)

dependabot[bot]
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[CMAKE] Remove environment variable support from the add external components script (#4211)

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[ETW] Make spans own their names (#4247)

ThomsonTan
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[SDK] Span limits configuration (#4232)

dbarker
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[CONFIGURATION] Define and set spec default values in configuration objects (#4244)

dbarker
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[CMAKE] Upgrade to protobuf 35.1 and grpc 1.82.1 (#4255)

dbarker
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[RELEASE] Release opentelemetry-cpp 1.28.0 (#4233)

marcalff
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[RELEASE] Bump main branch to 1.29.0-dev (#4259)

marcalff
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docs: update supported development platforms (#4260)

ThomsonTan
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Bump github/codeql-action/upload-sarif from 4.37.0 to 4.37.1 (#4262)

dependabot[bot]
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Bump github/codeql-action/analyze from 4.37.0 to 4.37.1 (#4263)

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[API] reduce allocation in no span case (#4254)
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