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Split OTEL_EXPORTER to OTEL_TRACE_EXPORTER and OTEL_METRICS_EXPORTER #1318

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merged 8 commits into from
Jan 13, 2021
Merged

Split OTEL_EXPORTER to OTEL_TRACE_EXPORTER and OTEL_METRICS_EXPORTER #1318

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39b03ed
Rename OTEL_EXPORTER to OTEL_EXPORTERS
Jan 5, 2021
d4502d6
Split exporter variables
Jan 6, 2021
07faed8
Update compliance matrix
Jan 6, 2021
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Merge branch 'master' of github.com:open-telemetry/opentelemetry-spec…
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Merge branch 'master' of github.com:open-telemetry/opentelemetry-spec…
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Update spec-compliance-matrix.md
Jan 12, 2021
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3 changes: 2 additions & 1 deletion spec-compliance-matrix.md
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Expand Up @@ -126,7 +126,8 @@ status of the feature is not known.
|OTEL_EXPORTER_OTLP_* | | + | | + | + | - | - | | - | - | - |
|OTEL_EXPORTER_JAEGER_* | | + | | + | + | - | - | + | - | - | - |
|OTEL_EXPORTER_ZIPKIN_* | | + | | + | | - | - | | - | - | - |
|OTEL_EXPORTER | | - | | + | | | | | | - | - |
|OTEL_TRACE_EXPORTER | | - | | - | | | | | | - | - |
|OTEL_METRICS_EXPORTERS | | - | | - | | | | | | - | - |
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|OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT | | + | | + | + | | | | | - | - |
|OTEL_SPAN_EVENT_COUNT_LIMIT | | + | | + | + | | | | | - | - |
|OTEL_SPAN_LINK_COUNT_LIMIT | | + | | + | + | | | | | - | - |
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17 changes: 14 additions & 3 deletions specification/sdk-environment-variables.md
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Expand Up @@ -75,13 +75,24 @@ See [OpenTelemetry Protocol Exporter Configuration Options](./protocol/exporter.

## Exporter Selection

We define environment variables for setting a single exporter per signal. SDKs SHOULD provide a means to
set multiple exporters for a signal programmatically.
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I am confused. First it says setting "a single exporter". Then it says set "multiple exporters". Is it "single" or "multiple"?

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The difference is whether it's an environment variable or programmatically. Not sure how to reword it to be less confusing but let me know if you have an idea :) Or if this point isn't helpful (doc is about env variables) I can delete it too.

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not helpful here - SDK API requirements should be in one place.

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Got it - removed


| Name | Description | Default |
| ------------- | ---------------------------------------------------------------------------- | ------- |
| OTEL_EXPORTER | Exporter to be used, can be a comma-separated list to use multiple exporters | "otlp" |
| OTEL_TRACE_EXPORTER | Trace exporter to be used | "otlp" |
| OTEL_METRICS_EXPORTER | Metrics exporter to be used | "otlp" |

Known values for OTEL_TRACE_EXPORTER are:

- `"otlp"`: [OTLP](./protocol/otlp.md)
- `"jaeger"`: [Jaeger gRPC](https://www.jaegertracing.io/docs/1.21/apis/#protobuf-via-grpc-stable)
- `"zipkin"`: [Zipkin](https://zipkin.io/zipkin-api/) (Defaults to [protobuf](https:/openzipkin/zipkin-api/blob/master/zipkin.proto) format)

Known values for OTEL_EXPORTER are: "otlp", "jaeger", "zipkin", "prometheus", "otlp_span", "otlp_metric".
Known values for OTEL_METRICS_EXPORTER are:

Note: "otlp" is equivalent to "otlp_span,otlp_metric".
- `"otlp"`: [OTLP](./protocol/otlp.md)
- `"prometheus"`: [Prometheus](https:/prometheus/docs/blob/master/content/docs/instrumenting/exposition_formats.md)

## Language Specific Environment Variables

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