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Mark base-2 exponential histogram as stable #3041

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Jan 13, 2023
Merged

Mark base-2 exponential histogram as stable #3041

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cf6c6ac
Mark exponential histogram as stable
jack-berg Dec 15, 2022
9a4fc39
Add changelog entry
jack-berg Dec 15, 2022
8cd533a
Merge branch 'main' into stabilize-exponential-histogram
jack-berg Jan 4, 2023
7dae520
Merge branch 'main' of https://github.com/open-telemetry/opentelemetr…
jack-berg Jan 10, 2023
c10df40
SDKs should support exponential histogram
jack-berg Jan 10, 2023
f4b19f0
Merge branch 'main' into stabilize-exponential-histogram
reyang Jan 10, 2023
4755c90
Rename to base 2 exponential bucket histogram aggregation
jack-berg Jan 11, 2023
6cc0b1e
Merge branch 'stabilize-exponential-histogram' of https://github.com/…
jack-berg Jan 11, 2023
77a30fa
Fix typo in changelog
jack-berg Jan 13, 2023
48ff37c
Merge branch 'main' into stabilize-exponential-histogram
jack-berg Jan 13, 2023
78315eb
Merge branch 'main' into stabilize-exponential-histogram
reyang Jan 13, 2023
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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -21,6 +21,8 @@ release.

- Rename built-in ExemplarFilters to AlwaysOn, AlwaysOff and TraceBased.
([#2919](https://github.com/open-telemetry/opentelemetry-specification/pull/2919))
- Mark exponential bucket histogram as stable.
([#3041](https://github.com/open-telemetry/opentelemetry-specification/pull/3041))

### Logs

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8 changes: 4 additions & 4 deletions spec-compliance-matrix.md
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Expand Up @@ -177,10 +177,10 @@ formats is required. Implementing more than one format is optional.
| The `Sum` aggregation performs as specified. | | + | + | + | + | | | + | | + | + | |
| The `LastValue` aggregation is available. | | + | + | + | + | | | + | | + | + | |
| The `LastValue` aggregation performs as specified. | | + | + | + | + | | | + | | + | + | |
| The `Histogram` aggregation is available. | | + | + | + | + | | | | | + | + | |
| The `Histogram` aggregation performs as specified. | | + | + | | + | | | | | + | + | |
| The explicit bucket `Histogram` aggregation is available. | | - | + | + | + | | | + | | + | + | |
| The explicit bucket `Histogram` aggregation performs as specified. | | - | + | + | + | | | + | | + | + | |
| The `ExplicitBucketHistogram` aggregation is available. | | - | + | + | + | | | + | | + | + | |
| The `ExplicitBucketHistogram` aggregation performs as specified. | | - | + | + | + | | | + | | + | + | |
| The `ExponentialBucketHistogram` aggregation is available. | | | | | | | | | | | | |
| The `ExponentialBucketHistogram` aggregation performs as specified. | | | | | | | | | | | | |
| The metrics Reader implementation supports registering metric Exporters | | | + | + | + | | | + | | + | + | |
| The metrics Reader implementation supports configuring the default aggregation on the basis of instrument kind. | | | + | | + | | | | | - | - | |
| The metrics Reader implementation supports configuring the default temporality on the basis of instrument kind. | | | + | + | + | | | | | + | | |
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2 changes: 1 addition & 1 deletion specification/metrics/data-model.md
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Expand Up @@ -519,7 +519,7 @@ so that worst-case error is within their error tolerance.

### ExponentialHistogram
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**Status**: [Experimental](../document-status.md)
**Status**: [Stable](../document-status.md)
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[ExponentialHistogram](https://github.com/open-telemetry/opentelemetry-proto/blob/cfbf9357c03bf4ac150a3ab3bcbe4cc4ed087362/opentelemetry/proto/metrics/v1/metrics.proto#L222)
data points are an alternate representation to the
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6 changes: 2 additions & 4 deletions specification/metrics/sdk.md
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Expand Up @@ -357,9 +357,9 @@ The SDK MUST provide the following `Aggregation` to support the
- [Last Value](./sdk.md#last-value-aggregation)
- [Explicit Bucket Histogram](./sdk.md#explicit-bucket-histogram-aggregation)

The SDK MAY provide the following `Aggregation`:
The SDK SHOULD provide the following `Aggregation`:

- [Exponential Bucket Histogram Aggregation](./sdk.md#exponential-bucket-histogram-aggregation)
- [Exponential Bucket Histogram](./sdk.md#exponential-bucket-histogram-aggregation)
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#### Drop Aggregation

Expand Down Expand Up @@ -450,8 +450,6 @@ or equal to the measurement.

##### Exponential Bucket Histogram Aggregation

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

The Exponential Histogram Aggregation informs the SDK to collect data
for the [Exponential Histogram Metric
Point](./data-model.md#exponentialhistogram), which uses an exponential
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14 changes: 5 additions & 9 deletions specification/metrics/sdk_exporters/otlp.md
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Expand Up @@ -4,12 +4,10 @@ linkTitle: OTLP

# OpenTelemetry Metrics Exporter - OTLP

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

## General

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

OTLP Metrics Exporter is a [Push Metric
Exporter](../sdk.md#push-metric-exporter) which sends metrics via the
[OpenTelemetry Protocol](../../protocol/README.md).
Expand Down Expand Up @@ -37,12 +35,10 @@ then by default:

## Additional Configuration

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

| Name | Status | Description | Default |
|-----------------------------------------------------|--------------|---------------------------------------------------------------------|-----------------------------|
| `OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE` | Stable | The aggregation temporality to use on the basis of instrument kind. | `cumulative` |
| `OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION` | Experimental | The default aggregation to use for histogram instruments. | `explicit_bucket_histogram` |
| Name | Description | Default |
|------------------------------------------------------------|---------------------------------------------------------------------|-----------------------------|
| `OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE` | The aggregation temporality to use on the basis of instrument kind. | `cumulative` |
| `OTEL_EXPORTER_OTLP_METRICS_DEFAULT_HISTOGRAM_AGGREGATION` | The default aggregation to use for histogram instruments. | `explicit_bucket_histogram` |

The recognized (case-insensitive) values for `OTEL_EXPORTER_OTLP_METRICS_TEMPORALITY_PREFERENCE` are:

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