Data stream routing

Elastic Stack Serverless

Elastic APM supports routing APM data to user-defined data stream names using the reroute processor. However, you can also ingest OTLP data without having to create new ingest pipelines.

Setting data stream attributes

To automatically route OTLP data, set the data_stream.dataset and data_stream.namespace attributes. These attributes map to the respective ECS fields.

You can set the data_stream attributes at resource level, scope level, span level, or span event level. Elastic parses the attributes in increasing order of precedence. For example, span event data_stream attributes override the span data_stream attributes. This implies that data_stream attributes are inherited from previous levels. If a span doesn't specify data_stream attributes, it uses the scope attributes.

For guidance on how to set resource attributes in OpenTelemetry, refer to setting resource attributes.