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feat: Add custom labels to exemplars - #2191
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One review item: the new exemplar label suppliers are documented as applying to automatically-sampled exemplars, but the current implementation also injects them into custom exemplars via updateCustomExemplar(). That changes the semantics of observeWithExemplar/incWithExemplar, which no longer remain fully caller-controlled when a global supplier is installed. Please avoid merging the extra supplier labels on the custom-exemplar path (while keeping trace/span enrichment if desired).
Signed-off-by: Jay DeLuca <jaydeluca4@gmail.com>
Signed-off-by: Jay DeLuca <jaydeluca4@gmail.com>
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🤖 I have created a release *beep* *boop* --- ## [1.8.0](v1.7.0...v1.8.0) (2026-06-11) ### Features * Add custom labels to exemplars ([#2191](#2191)) ([fd1f3e8](fd1f3e8)) * add MetricMetadata.Builder, deprecate wide constructors ([#2202](#2202)) ([adeef32](adeef32)) ### Bug Fixes * Avoid unnuecessary exemplar allocations ([#2209](#2209)) ([0b6a91f](0b6a91f)) * **deps:** update spring boot to v4.1.0 ([#2213](#2213)) ([df25c08](df25c08)) ### Documentation * cover typed family descriptors and @stableAPI since v1.6.1 ([#2181](#2181)) ([7ca9f99](7ca9f99)) --- > [!IMPORTANT] > Close and reopen this PR to trigger CI checks. --------- Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com> Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>
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Resolves#1994