L. C. Hsieh created SPARK-58930:
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Summary: Import scg-observability crate into Spark Connect Gateway
Key: SPARK-58930
URL: https://issues.apache.org/jira/browse/SPARK-58930
Project: Spark
Issue Type: Sub-task
Components: Connect
Affects Versions: connect-gateway-0.1.0
Reporter: L. C. Hsieh
Assignee: L. C. Hsieh
Part of importing the Spark Connect Gateway reference implementation into
apache/spark-connect-gateway as a series of small, bottom-up PRs.
This adds the scg-observability crate — the metrics, tracing, and admin surface
for the gateway:
- Prometheus metrics for the gateway
- Distributed tracing — an OpenTelemetry exporter with W3C traceparent
propagation
- An admin HTTP server exposing /metrics, /healthz, and /readyz
scg-observability is a leaf crate (no internal dependencies), so it compiles and
tests on its own (8 unit tests). It is appended to the workspace members list,
and is consumed later by the proxy and gateway crates.
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