Package org.apache.hadoop.hbase.master.balancer

Class MetricsStochasticBalancerSourceImpl

java.lang.Object

org.apache.hadoop.hbase.metrics.BaseSourceImpl

org.apache.hadoop.hbase.master.balancer.MetricsBalancerSourceImpl

org.apache.hadoop.hbase.master.balancer.MetricsStochasticBalancerSourceImpl

All Implemented Interfaces:

MetricsBalancerSource, MetricsStochasticBalancerSource, BaseSource, org.apache.hadoop.metrics2.MetricsSource

@Private
public class MetricsStochasticBalancerSourceImpl
extends MetricsBalancerSourceImpl
implements MetricsStochasticBalancerSource

Field Summary

Fields

Modifier and Type	Field	Description
private Map<String,String>	costFunctionDescs
private int	metricsSize
private static final float	MRU_LOAD_FACTOR
private int	mruCap
private final Map<String,Map<String,Double>>	stochasticCosts
private static final String	TABLE_FUNCTION_SEP

Fields inherited from class org.apache.hadoop.hbase.metrics.BaseSourceImpl

metricsAdapter, metricsContext, metricsDescription, metricsJmxContext, metricsName, metricsRegistry, registry

Fields inherited from interface org.apache.hadoop.hbase.metrics.BaseSource

HBASE_METRICS_SYSTEM_NAME

Fields inherited from interface org.apache.hadoop.hbase.master.balancer.MetricsBalancerSource

BALANCE_CLUSTER, BALANCER_STATUS, METRICS_CONTEXT, METRICS_DESCRIPTION, METRICS_JMX_CONTEXT, METRICS_NAME, MISC_INVOATION_COUNT

Constructor Summary

Constructors

Constructor	Description
MetricsStochasticBalancerSourceImpl()

Method Summary

Modifier and Type	Method	Description
private static int	calcMruCap(int metricsSize)	Calculates the mru cache capacity from the metrics size
void	getMetrics(org.apache.hadoop.metrics2.MetricsCollector metricsCollector, boolean all)
void	updateMetricsSize(int size)	Updates the number of metrics reported to JMX
void	updateStochasticCost(String tableName, String costFunctionName, String functionDesc, Double cost)	Reports stochastic load balancer costs to JMX

Methods inherited from class org.apache.hadoop.hbase.master.balancer.MetricsBalancerSourceImpl

incrMiscInvocations, init, updateBalanceCluster, updateBalancerStatus

Methods inherited from class org.apache.hadoop.hbase.metrics.BaseSourceImpl

decGauge, getMetricsContext, getMetricsDescription, getMetricsJmxContext, getMetricsName, getMetricsRegistry, incCounters, incGauge, removeMetric, setGauge, updateHistogram

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hbase.metrics.BaseSource

decGauge, getMetricRegistryInfo, getMetricsContext, getMetricsDescription, getMetricsJmxContext, getMetricsName, incCounters, incGauge, init, removeMetric, setGauge, updateHistogram

Methods inherited from interface org.apache.hadoop.hbase.master.balancer.MetricsBalancerSource

incrMiscInvocations, updateBalanceCluster, updateBalancerStatus

Field Details

TABLE_FUNCTION_SEP

private static final String TABLE_FUNCTION_SEP

See Also:

• Constant Field Values

MRU_LOAD_FACTOR

private static final float MRU_LOAD_FACTOR

See Also:

• Constant Field Values

metricsSize

private int metricsSize

mruCap

private int mruCap

stochasticCosts

private final Map<String,Map<String,Double>> stochasticCosts

costFunctionDescs

private Map<String,String> costFunctionDescs

Constructor Details

MetricsStochasticBalancerSourceImpl

public MetricsStochasticBalancerSourceImpl()

Method Details

calcMruCap

private static int calcMruCap(int metricsSize)

Calculates the mru cache capacity from the metrics size

updateMetricsSize

public void updateMetricsSize(int size)

Description copied from interface: MetricsStochasticBalancerSource

Updates the number of metrics reported to JMX

Specified by:

updateMetricsSize in interface MetricsStochasticBalancerSource

updateStochasticCost

public void updateStochasticCost(String tableName,
 String costFunctionName,
 String functionDesc,
 Double cost)

Reports stochastic load balancer costs to JMX

Specified by:

updateStochasticCost in interface MetricsStochasticBalancerSource

getMetrics

public void getMetrics(org.apache.hadoop.metrics2.MetricsCollector metricsCollector,
 boolean all)

Specified by:

getMetrics in interface org.apache.hadoop.metrics2.MetricsSource

Overrides:

getMetrics in class BaseSourceImpl