KIP-627 — Expose Trogdor-specific JMX Metrics for Tasks and Agents

Accepted TestingMetrics

Exposes Trogdor (Kafka's fault injection/benchmarking framework) agent and task state as JMX metrics (e.g., `active-agents-count`, `active-tasks-count`, `task-state`), eliminating the need to poll the Trogdor REST API for cluster health. Monitoring Trogdor cluster health requires REST API polling, which is burdensome compared to standard JMX-based monitoring used for all other Kafka components.

Details