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Add `OTEL_SERVICE_NAME` environment variable (#1677) 

* Add OTEL_SERVICE_NAME environment variable

Closes #709
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Nikita Salnikov-Tarnovski 2021-05-24 16:54:33 +03:00 committed by GitHub
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specification/resource/semantic_conventions/README.md
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@ -36,9 +36,20 @@ Attributes are grouped logically by the type of the concept that they described.
Certain attribute groups in this document have a **Required** column. For these groups if any attribute from the particular group is present in the Resource then all attributes that are marked as Required MUST be also present in the Resource. However it is also valid if the entire attribute group is omitted (i.e. none of the attributes from the particular group are present even though some of them are marked as Required in this document). Certain attribute groups in this document have a **Required** column. For these groups if any attribute from the particular group is present in the Resource then all attributes that are marked as Required MUST be also present in the Resource. However it is also valid if the entire attribute group is omitted (i.e. none of the attributes from the particular group are present even though some of them are marked as Required in this document).
## Attributes with Special Handling
Given their significance some resource attributes are treated specifically as described below.
### Semantic Attributes with Dedicated Environment Variable
These are the attributes which MAY be configurable via a dedicated environment variable
as specified in [OpenTelemetry Environment Variable Specification](../../sdk-environment-variables.md):
- [`service.name`](#service)
## Semantic Attributes with SDK-provided Default Value ## Semantic Attributes with SDK-provided Default Value
These are the the attributes which MUST be provided by the SDK These are the attributes which MUST be provided by the SDK
as specified in the [Resource SDK specification](../sdk.md#sdk-provided-resource-attributes): as specified in the [Resource SDK specification](../sdk.md#sdk-provided-resource-attributes):
- [`service.name`](#service) - [`service.name`](#service)