Package org.apache.hadoop.metrics2.lib
@Public
@Evolving
package org.apache.hadoop.metrics2.lib
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ClassDescriptionAn optional metrics registry class for creating and maintaining a collection of MetricsMutables, making writing metrics source easier.Class to handle the ScheduledExecutorService
ScheduledExecutorServiceused by MetricsRegionAggregateSourceImpl, and JmxCacheBusterA histogram implementation that runs in constant space, and exports to hadoop2's metrics2 system.Extended histogram implementation with metric range counters.Extended histogram implementation with counters for metric size ranges.Extended histogram implementation with counters for metric time ranges.