Package org.apache.nutch.metrics

Metrics infrastructure for Apache Nutch.

This package provides centralized constants and utilities for Hadoop MapReduce metrics/counters following Prometheus naming conventions.

The main class is NutchMetrics which defines all counter group names and counter names as constants.

Since:

1.22

Class Summary

Class	Description
ErrorTracker	A utility class for tracking errors by category with automatic classification.
LatencyTracker	A utility class for tracking latency metrics using TDigest for percentile calculation.
NutchMetrics	Centralized constants for Hadoop metrics counter groups and names.

Enum Summary

Enum	Description
ErrorTracker.ErrorType	Error type categories for classification.