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feat(spec/compat): stabilize OTel exponential histogram to Prometheus #5272

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feat(spec/compat): stabilize OTel exponential histogram to Prometheus #5272

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feat(spec/compat): stabilize OTel exponential histogram to Prometheus
krajorama Aug 17, 2026
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Merge branch 'main' into krajo/stabilize-expo-histograms
krajorama Oct 19, 2026
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Merge branch 'main' into krajo/stabilize-expo-histograms
dashpole Oct 30, 2026
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Merge remote-tracking branch 'upstream/main' into krajo/stabilize-exp…
krajorama Nov 6, 2026
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3 changes: 3 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -103,6 +103,9 @@ release.
([#5213](https://github.com/open-telemetry/opentelemetry-specification/pull/5213))
- Stabilize Prometheus Info metric transformation.
([#5211](https://github.com/open-telemetry/opentelemetry-specification/pull/5211))
- Stabilize the OpenTelemetry Exponential Histogram to Prometheus Native Histogram
with standard (exponential) schema transformation.
([#5272](https://github.com/open-telemetry/opentelemetry-specification/pull/5272))
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- Clarify that the identifying resource attributes `service.name`,
`service.namespace`, and `service.instance.id` should be converted to the
Prometheus `target` info metric along with all other resource attributes.
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2 changes: 1 addition & 1 deletion specification/compatibility/prometheus_and_openmetrics.md
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Expand Up @@ -605,7 +605,7 @@ When converting to a Prometheus NHCB, only a single NHCB metric MUST be created:

### Exponential Histograms

**Status**: [Development](../document-status.md)
**Status**: [Stable](../document-status.md)

An [OpenTelemetry Exponential Histogram](../metrics/data-model.md#exponentialhistogram)
with a cumulative aggregation temporality MUST be converted to a Prometheus
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