Tak-Lon (Stephen) Wu created RATIS-2389:
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Summary: Implementing Opentelemetry Tracing in Apache Ratis
Key: RATIS-2389
URL: https://issues.apache.org/jira/browse/RATIS-2389
Project: Ratis
Issue Type: New Feature
Components: client, server
Affects Versions: 3.3.0
Reporter: Tak-Lon (Stephen) Wu
This proposal outlines the addition of OpenTelemetry support to Ratis. By
instrumenting the full client-side request path, we can empower users and
maintainers with the granular data necessary for both long-term performance
optimization and proactive daily monitoring.
* 1-pager proposal:
[https://docs.google.com/document/d/1UKGVqOzkAXqUAJxOz1RHq6fIiO3xqV57eIqi-f9qdE4/edit?tab=t.0#heading=h.5a3u31wlm0n]
* PoC: https://github.com/taklwu/ratis/tree/opentelemetry0129
Subtasks
* Define the Metadata Field: Modify RaftRpcMessage.proto to include an optional
SpanContext field.
* Add TraceUtil: Land the utility class in ratis-common based on the code you
see in HBase.
* Create the client span: Introduce the span supplier and CLIENT span hook.
* Instrument GRPC on the Server: Start with the GRPC module as it is the most
common transport. Instrument the onNext methods (or within the caller) to
start/stop spans.
* Come up the user guide as part of the release.
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