I think you also need to update _KNOWN_SAMPLERS in this file and add a new entry in pyproject.toml project.entry-points.opentelemetry_traces_sampler group.

Uhm that would require also some update to _get_from_env_or_default for getting the root sampler

I think you also need to update _KNOWN_SAMPLERS in this file and add a new entry in pyproject.toml project.entry-points.opentelemetry_traces_sampler group.

@carlosalberto already replied.

@xrmx Also it hasn't been added to the env vars: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/configuration/sdk-environment-variables.md#general-sdk-configuration

Known values for OTEL_TRACES_SAMPLER are:

"always_on": AlwaysOnSampler
"always_off": AlwaysOffSampler
"traceidratio": TraceIdRatioBased
"parentbased_always_on": ParentBased(root=AlwaysOnSampler)
"parentbased_always_off": ParentBased(root=AlwaysOffSampler)
"parentbased_traceidratio": ParentBased(root=TraceIdRatioBased)
"parentbased_jaeger_remote": ParentBased(root=JaegerRemoteSampler)
"jaeger_remote": JaegerRemoteSampler
"xray": [AWS X-Ray Centralized Sampling](https://docs.aws.amazon.com/xray/latest/devguide/xray-console-sampling.html) (third party)

Adding always_record to env vars may not happen at all, but it MUST be (eventually) added to declarative config.