"Selenium 4.0 Grid Observability, Setup & Execution"
summary
Demonstrates setting up Selenium Grid 4 traceability by running OpenTelemetry instrumented grid components and collecting spans in Jaeger UI started via Docker while fetching telemetry jars with Coursier. Starts event-bus, session-map, session-queue, distributor, router and node, shows a node failure in traces, restarts the node, reruns a test and compares spans (filters by minimum duration 5s) to pinpoint the failing request, and notes client-side Maven dependencies and system properties used.
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