org.apache.hadoop.hbase.metrics.impl

Class HBaseMetrics2HadoopMetricsAdapter

java.lang.Object

org.apache.hadoop.hbase.metrics.impl.HBaseMetrics2HadoopMetricsAdapter

@InterfaceAudience.Private
public class HBaseMetrics2HadoopMetricsAdapter
extends Object

This is the adapter from "HBase Metrics Framework", implemented in hbase-metrics-api and hbase-metrics modules to the Hadoop Metrics2 framework. This adapter is not a metric source, but a helper to be able to collect all of the Metric's in the MetricRegistry using the MetricsCollector and MetricsRecordBuilder. Some of the code is forked from https://github.com/joshelser/dropwizard-hadoop-metrics2.

Field Summary

Fields

Modifier and Type	Field and Description
private static String	EMPTY_STRING
private static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor and Description
HBaseMetrics2HadoopMetricsAdapter()

Method Summary

Modifier and Type	Method and Description
private void	addCounter(String name, Counter counter, org.apache.hadoop.metrics2.MetricsRecordBuilder builder)
private void	addGauge(String name, Gauge<?> gauge, org.apache.hadoop.metrics2.MetricsRecordBuilder builder)
private void	addHistogram(String name, Histogram histogram, org.apache.hadoop.metrics2.MetricsRecordBuilder builder) Add Histogram value-distribution data to a Hadoop-Metrics2 record building.
private void	addMeter(String name, Meter meter, org.apache.hadoop.metrics2.MetricsRecordBuilder builder) Add Dropwizard-Metrics rate information to a Hadoop-Metrics2 record builder, converting the rates to the appropriate unit.
private void	addTimer(String name, Timer timer, org.apache.hadoop.metrics2.MetricsRecordBuilder builder)
void	snapshotAllMetrics(MetricRegistry metricRegistry, org.apache.hadoop.metrics2.MetricsCollector collector) Iterates over the MetricRegistry and adds them to the collector.
void	snapshotAllMetrics(MetricRegistry metricRegistry, org.apache.hadoop.metrics2.MetricsRecordBuilder builder) Iterates over the MetricRegistry and adds them to the builder.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

private static final org.slf4j.Logger LOG

EMPTY_STRING

private static final String EMPTY_STRING

See Also:

Constant Field Values

Constructor Detail

HBaseMetrics2HadoopMetricsAdapter

public HBaseMetrics2HadoopMetricsAdapter()

Method Detail

snapshotAllMetrics

public void snapshotAllMetrics(MetricRegistry metricRegistry,
                               org.apache.hadoop.metrics2.MetricsCollector collector)

Iterates over the MetricRegistry and adds them to the collector.

Parameters:

collector - A metrics collector

snapshotAllMetrics

public void snapshotAllMetrics(MetricRegistry metricRegistry,
                               org.apache.hadoop.metrics2.MetricsRecordBuilder builder)

Iterates over the MetricRegistry and adds them to the builder.

Parameters:

builder - A record builder

addGauge

private void addGauge(String name,
                      Gauge<?> gauge,
                      org.apache.hadoop.metrics2.MetricsRecordBuilder builder)

addCounter

private void addCounter(String name,
                        Counter counter,
                        org.apache.hadoop.metrics2.MetricsRecordBuilder builder)

addHistogram

private void addHistogram(String name,
                          Histogram histogram,
                          org.apache.hadoop.metrics2.MetricsRecordBuilder builder)

Add Histogram value-distribution data to a Hadoop-Metrics2 record building.

Parameters:

name - A base name for this record.

histogram - A histogram to measure distribution of values.

builder - A Hadoop-Metrics2 record builder.

addMeter

private void addMeter(String name,
                      Meter meter,
                      org.apache.hadoop.metrics2.MetricsRecordBuilder builder)

Add Dropwizard-Metrics rate information to a Hadoop-Metrics2 record builder, converting the rates to the appropriate unit.

Parameters:

builder - A Hadoop-Metrics2 record builder.

name - A base name for this record.

addTimer

private void addTimer(String name,
                      Timer timer,
                      org.apache.hadoop.metrics2.MetricsRecordBuilder builder)