flink_operator_recordsoutpersec

High garbage collection pressure on TaskManagers causes processing slowdowns that create backpressure, increased state size, and eventually full GC pauses lasting minutes.

Growing source lag combined with stable or decreasing throughput indicates the job cannot keep pace with input rate, leading to increasing latency and eventual processing failure.

Slow RocksDB flushes cause write stalls that propagate upstream as backpressure, degrading throughput and increasing checkpoint durations.