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

Interface MetricsStochasticBalancerSource

All Superinterfaces:

BaseSource, MetricsBalancerSource

All Known Implementing Classes:

MetricsStochasticBalancerSourceImpl

@Private
public interface MetricsStochasticBalancerSource
extends MetricsBalancerSource

This interface extends the basic metrics balancer source to add a function to report metrics that related to stochastic load balancer. The purpose is to offer an insight to the internal cost calculations that can be useful to tune the balancer. For details, refer to HBASE-13965

Field Summary

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

Method Summary

Modifier and Type	Method	Description
void	updateMetricsSize(int size)	Updates the number of metrics reported to JMX
void	updateStochasticCost(String tableName, String costFunctionName, String costFunctionDesc, Double value)	Reports stochastic load balancer costs to JMX

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

Method Details

updateMetricsSize

void updateMetricsSize(int size)

Updates the number of metrics reported to JMX

updateStochasticCost

void updateStochasticCost(String tableName,
 String costFunctionName,
 String costFunctionDesc,
 Double value)

Reports stochastic load balancer costs to JMX