ML / Anomaly Detection Errors

These errors originate from the UadMLPlugin which runs machine learning models to detect anomalous user behavior on streaming rigs.

Hex Error Codes

Error Code	Name	Plugin	Description
0x80210002	NVST_DISCONN_ML_ANOMALY_DETECTED	UadMLPlugin	ML anomaly score exceeded threshold
0x80210003	NVST_DISCONN_ML_INFERENCE_FAILED	UadMLPlugin	SageMaker/LightGBM inference error
0x80210004	NVST_DISCONN_ML_FEATURE_EXTRACTION_FAILED	UadMLPlugin	Feature extraction from metrics failed

How ML Detection Works

1. PerfmonCollector gathers Windows Performance Monitor metrics (CPU, memory, network, GPU)
2. FeatureExtractor converts raw metrics into ML feature vectors
3. Features are sent to either:
   • LocalPredictor (LightGBM on-rig) for fast local inference
   • SageMakerPredictor (AWS cloud) for more complex models
4. If the anomaly score exceeds a configured threshold, a SecurityTerminationInitiated event is emitted

Error Messages

Inference Errors

SageMakerPredictor construction error: No AWS region provided
Unable to invoke SageMaker endpoint: [{}] {}
Unable to invoke SageMaker endpoint (retry): [{}] {}
Unable to open model file: {}
Unable to find model info in the model file
Unable to load model file: {}
Empty data set passed for inference
Failure during local prediction: {}
Wrong number of columns for inference
Fail to predict for the row

Feature Extraction Errors

! Extraction error: {}
! Inference error: {}
Unable to extact features for metric '{}': {}
GetMetricValues failed: Invalid metric

Performance Monitor Errors

Unable to add feature. PerfmonCollector is already running.
Perfmon feature '{}' already added
PerfmonCollector is not initialized
PerfmonCollector is not subscribed to Perfmon counters. Re-subscribing...
Failed to subscribe to Perfmon counters
PerfmonCollector Poll has failed: {}

Internal Error Classes

Class	Namespace	Description
ExtractionError	Internal	Feature extraction failure
InferenceError	Internal	ML inference failure
CancelledError	MessageBusClient	Operation cancelled
TimeoutError	MessageBusClient	Operation timeout
NotOnBusError	MessageBusClient	Not connected to message bus