Migrate to New Operation Name Mappings

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Overview

When using OpenTelemetry with Datadog, you might see unclear or lengthy operation names in your traces, and some traces might not appear in your service pages. This happens because of missing mappings between OpenTelemetry SDK information and Datadog operation names, which are span attributes that classify entry points into a service.

Datadog now provides new operation name mappings that improve trace visibility in the service page. This feature requires opt-in configuration now but will become the default in the near future.

Datadog strongly recommends migrating to the new mappings as soon as possible before they become the default.

Prerequisites

Before migrating, remove any existing span name configuration:

Remove span_name_as_resource_name and span_name_remappings from your Datadog exporter and connector configurations:

# Remove the highlighted lines if they exist in your configuration
exporters:
  datadog:
    traces:
      span_name_as_resource_name: true
      span_name_remappings:
        "old_name1": "new_name"

connectors:
  datadog/connector:
    traces:
      span_name_as_resource_name: true

Remove span_name_as_resource_name and span_name_remappings from your Agent configuration:

# Remove the highlighted lines if they exist in your configuration
otlp_config:
  traces:
    span_name_as_resource_name: true
    span_name_remappings:
      "old_name1": "new_name"

Remove these environment variables:
- DD_OTLP_CONFIG_TRACES_SPAN_NAME_AS_RESOURCE_NAME
- DD_OTLP_CONFIG_TRACES_SPAN_NAME_REMAPPINGS

Enable new operation name mappings

Launch the OpenTelemetry Collector with the feature gate:

otelcol --config=config.yaml --feature-gates=datadog.EnableOperationAndResourceNameV2

Replace removed configurations

If you previously used span name configurations, replace them with processor configurations:

Replace SpanNameAsResourceName

The span_name_as_resource_name configuration you removed pulled the span.name attribute from your OpenTelemetry trace to populate the Datadog operation name. To maintain this functionality, use a transform processor to map span names to the operation.name attribute:

processors:
  transform:
    trace_statements:
      - context: span
        statements:
        - set(attributes["operation.name"], name)

Replace SpanNameRemappings

The span_name_remappings configuration you removed allowed automatic mapping between operation names. To maintain this functionality, use a transform processor to set specific operation names:

processors:
  transform:
    trace_statements:
      - context: span
        statements:
        - set(attributes["operation.name"], "new_name") where name == "old_name"

Enable the feature using one of these methods:

Add the feature flag to your Agent configuration:

apm_config:
  features: ["enable_operation_and_resource_name_logic_v2"]

Set the environment variable:

export DD_APM_FEATURES="enable_operation_and_resource_name_logic_v2"

Replace removed configurations
If you previously used span name configurations and need to maintain similar functionality, set the operation.name attribute directly in your application code.