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• Application: General applications, such as doris' fe and be.
• OTel Libraty: Also known as SDK, it is responsible for collecting and exporting telemetry data in the program.
• OTel Collector: The OpenTelemetry Collector offers a vendor-agnostic implementation of how to receive, process and export telemetry data. It removes the need to run, operate, and maintain multiple agents/collectors. This works with improved scalability and supports open-source observability data formats (e.g. Jaeger, Prometheus, Fluent Bit, etc.) sending to one or more open-source or commercial back-ends.
• Backends:  Responsible for persisting and presenting telemetry data, and providing the ability to analyze telemetry data. such as zipkin, prometheus, etc.

Detailed Design

Query trace collection and export:

1-creating trace

2-collecting span of fe

3-collecting span of be

4-propagating trace between fe and be

5-exporting span

Scheduling

specific implementation steps and approximate scheduling.