Joshua MacDonald

Support stand-alone exponential histogram data structure for use by OpenTelemetry components

4

### Problem Statement https://github.com/open-telemetry/opentelemetry-go/issues/2501 describes adding stand-alone exponential histogram _mapping functions_ for use by OpenTelemetry components (e.g., [the OTel Collector's standard logging exporter](https://github.com/open-telemetry/opentelemetry-collector/pull/5938)). The same request exists for a stand-alone...

### Problem Statement The [exponential histogram mapping functions](https://github.com/open-telemetry/opentelemetry-go/tree/main/sdk/metric/aggregator/exponential/mapping) in `sdk/metric/aggregator/exponential/mapping` have been reviewed and are meant for stand-alone use by other OpenTelemetry components as well as for future use by...

Use the otel-go expo-histogram mapping functions

3

**Description:** This updates the logging exporter to use the otel-go mapping functions and changes the inclusivity. This depends (logically) on https://github.com/open-telemetry/opentelemetry-go/pull/2982 releasing (i.e., otel-go 1.10.x). This addresses boundary conditions more...

Inject OTel tracestate when power-of-two probability sampling

5

**Proposal** I propose to modify the [probabilistic sampling processor](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/probabilisticsamplerprocessor) to emit an OTel tracestate corresponding with the sampling probability in use, which is well defined in the current specification when...

### Problem Statement Following the [specification change to add partial success responses](https://github.com/open-telemetry/opentelemetry-specification/pull/2696), each OTel SDK is encouraged to handle the resulting error message string in an appropriate way, considering existing...

Handle partial success responses from OTLP export services

1

### Problem Statement Following the [specification change to add partial success responses](https://github.com/open-telemetry/opentelemetry-specification/pull/2696), each OTel SDK is encouraged to handle the resulting error message string in an appropriate way, considering existing...

### Problem Statement Following the [specification change to add partial success responses](https://github.com/open-telemetry/opentelemetry-specification/pull/2696), each OTel SDK is encouraged to handle the resulting error message string in an appropriate way, considering existing...

WIP Add runtime/metrics source option to instrumentation/runtime metrics

2

Fixes #2624 The code in `instrumentation/metrics` was contributed a long time ago. The Go team has since introduced runtime metrics in an official way. This PR adds optional support for...

### Problem Statement Following the [specification change to add partial success responses](https://github.com/open-telemetry/opentelemetry-specification/pull/2696), each OTel SDK is encouraged to handle the resulting error message string in an appropriate way, considering existing...

Update exponential histogram to use upper-inclusive boundaries

2

**Describe the request** Specification PR https://github.com/open-telemetry/opentelemetry-specification/pull/2633 has changed the boundary conditions for exponential histograms and specified that SDKs SHOULD be exact for powers-of-two. This implies a fairly complex change, see...