org.apache.hadoop.hbase.master.balancer

Class CacheAwareLoadBalancer

java.lang.Object

org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer

org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer

org.apache.hadoop.hbase.master.balancer.CacheAwareLoadBalancer

All Implemented Interfaces:

ConfigurationObserver, LoadBalancer, Stoppable

@InterfaceAudience.Private
public class CacheAwareLoadBalancer
extends StochasticLoadBalancer

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CacheAwareLoadBalancer.GeneratorFunctionType

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer

StochasticLoadBalancer.GeneratorType

Field Summary

Fields inherited from class org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer

candidateGenerators, COST_FUNCTIONS_COST_FUNCTIONS_KEY, costFunctions, DEFAULT_KEEP_REGION_LOADS, DEFAULT_MAX_RUNNING_TIME, DEFAULT_MAX_STEPS, DEFAULT_MIN_COST_NEED_BALANCE, DEFAULT_RUN_MAX_STEPS, DEFAULT_STEPS_PER_REGION, KEEP_REGION_LOADS, MAX_RUNNING_TIME_KEY, MAX_STEPS_KEY, MIN_COST_NEED_BALANCE_KEY, OVERALL_COST_FUNCTION_NAME, RUN_MAX_STEPS_KEY, STEPS_PER_REGION_KEY

Fields inherited from class org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer

BALANCER_DECISION_BUFFER_ENABLED, BALANCER_REJECTION_BUFFER_ENABLED, clusterStatus, DEFAULT_BALANCER_DECISION_BUFFER_ENABLED, DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED, DEFAULT_HBASE_MASTER_LOADBALANCE_BYTABLE, isByTable, masterServerName, metricsBalancer, MIN_SERVER_BALANCE, onlySystemTablesOnMaster, rackManager, regionFinder, services, slop, useRegionFinder

Fields inherited from interface org.apache.hadoop.hbase.master.LoadBalancer

BOGUS_SERVER_NAME, SYSTEM_TABLES_ON_MASTER, TABLES_ON_MASTER

Constructor Summary

Constructors

Constructor and Description
CacheAwareLoadBalancer()

Method Summary

Modifier and Type	Method and Description
protected List<org.apache.hadoop.hbase.master.balancer.CandidateGenerator>	createCandidateGenerators()
protected List<org.apache.hadoop.hbase.master.balancer.CostFunction>	createCostFunctions(org.apache.hadoop.conf.Configuration configuration)
void	loadConf(org.apache.hadoop.conf.Configuration configuration)
void	updateClusterMetrics(ClusterMetrics clusterMetrics) Set the current cluster status.

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

balanceTable, functionCost, getRandomGenerator, updateBalancerLoadInfo

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

assignMasterSystemRegions, balanceCluster, balanceMasterRegions, getConf, getDefaultSlop, idleRegionServerExist, initialize, isStopped, onConfigurationChange, postMasterStartupInitialize, preBalanceCluster, randomAssignment, regionOffline, regionOnline, retainAssignment, roundRobinAssignment, setMasterServices, shouldBeOnMaster, sloppyRegionServerExist, stop, toEnsumbleTableLoad, updateBalancerStatus

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.master.LoadBalancer

isMasterCanHostUserRegions, isSystemTablesOnlyOnMaster, isTablesOnMaster

Constructor Detail

CacheAwareLoadBalancer

public CacheAwareLoadBalancer()

Method Detail

loadConf

public void loadConf(org.apache.hadoop.conf.Configuration configuration)

Overrides:

loadConf in class StochasticLoadBalancer

createCandidateGenerators

protected List<org.apache.hadoop.hbase.master.balancer.CandidateGenerator> createCandidateGenerators()

Overrides:

createCandidateGenerators in class StochasticLoadBalancer

createCostFunctions

protected List<org.apache.hadoop.hbase.master.balancer.CostFunction> createCostFunctions(org.apache.hadoop.conf.Configuration configuration)

Overrides:

createCostFunctions in class StochasticLoadBalancer

updateClusterMetrics

public void updateClusterMetrics(ClusterMetrics clusterMetrics)

Description copied from interface: LoadBalancer

Set the current cluster status. This allows a LoadBalancer to map host name to a server

Specified by:

updateClusterMetrics in interface LoadBalancer

Overrides:

updateClusterMetrics in class StochasticLoadBalancer