Joshua MacDonald

**Is your feature request related to a problem? Please describe.** The new Metrics SDK has an OTLP gRPC exporter that is incompatible with the previous releases that the Lightstep SDK...

This issue is filed in to Golang repo as it describes work on the Go Metrics SDK, although the outcome of this work will be a recommendation for how to...

### Problem Statement The default state of an OTel SDK configures a basic standard-error error handler and logger. Using `examples/otel-collector` as a test case, I edited the example's `main()` to...

Thread-safe, multiple compression level support, proof of concept

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Just a note concerning how this library could be extended to support thread-safe configuration of compression settings. For our project we needed this specifically for Zstd, and I used the...

Probability Samplers based on W3C Trace Context Level 2

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Fixes #1413. Fixes #3602. ## Changes Updates Trace SDK and Propagator specifications with complete support for consistent probability sampling as described in [OTEP 235](https://github.com/open-telemetry/oteps/blob/main/text/trace/0235-sampling-threshold-in-trace-state.md). * [ ] Related issues #3307,...

Part of #3303. ## Changes Clarifies how the trace flags are represented when placing trace context in log records. Clarifies that `tracestate` is not encoded when placing trace context in...

Clarify how Trace Flags and Tracestate are handled by Trace SDKs

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Part of #1826. Part of #1413. ## Changes The W3C Trace Context Level 2 specification adds a new Random flag intended for use with Probability sampling. The Sampling SIG has...

Derived from #238. Ready for interested reviewers. Still needs examples. Diagram needs to be updated.

**Describe the bug** [sdk.go:111 E0301 19:20:08.695936 +0000] OTel SDK could not configure feature-gate: no such feature gate "telemetry.useOtelForInternalMetrics". valid gates:

Lightstep Metrics SDK exemplar support

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**Description:** First implementation of the OpenTelemetry metrics SDK exemplar specification in the LS Metrics SDK. This implements the specified exemplar filter mechanism. This implements two exemplar reservoirs, one named `Last`...