Conditional End2end Tracing
summary
Conditional tracing uses Lua hooks on RGW to set a trace flag per request so OpenTelemetry spans are created only for targeted flows, avoiding a measured 5% perf hit when tracing is blanket-enabled. The demo deploys via Rook with Jaeger agents injected as sidecars and OpenTelemetry C++ SDK in daemons; traces ride the Redis messages into OSDs so multipart uploads show end-to-end spans and transaction IDs, and Prometheus alerts trigger Prometheus‑triggered conditional tracing for slow Ops — both demos complete successfully.
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