Package org.apache.accumulo.test

Class ChaoticLoadBalancer

java.lang.Object

org.apache.accumulo.test.ChaoticLoadBalancer

All Implemented Interfaces:

TabletBalancer

public class ChaoticLoadBalancer
extends Object
implements TabletBalancer

A chaotic load balancer used for testing. It constantly shuffles tablets, preventing them from resting in a single location for very long. This is not designed for performance, do not use on production systems. I'm calling it the LokiLoadBalancer.

Will balance randomly, maintaining distribution

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.accumulo.core.spi.balancer.TabletBalancer

TabletBalancer.AssignmentParameters, TabletBalancer.BalanceParameters

Field Summary

Fields

Modifier and Type	Field	Description
protected BalancerEnvironment	environment

Constructor Summary

Constructors

Constructor	Description
ChaoticLoadBalancer()

Method Summary

Modifier and Type	Method	Description
long	balance(TabletBalancer.BalanceParameters params)
void	getAssignments(TabletBalancer.AssignmentParameters params)
protected List<TabletStatistics>	getOnlineTabletsForTable(TabletServerId tabletServerId, TableId tableId)
void	init(BalancerEnvironment balancerEnvironment)

Methods inherited from class java.lang.Object

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

Field Detail

environment

protected BalancerEnvironment environment

Constructor Detail

ChaoticLoadBalancer

public ChaoticLoadBalancer()

Method Detail

init

public void init(BalancerEnvironment balancerEnvironment)

Specified by:

init in interface TabletBalancer

getAssignments

public void getAssignments(TabletBalancer.AssignmentParameters params)

Specified by:

getAssignments in interface TabletBalancer

balance

public long balance(TabletBalancer.BalanceParameters params)

Specified by:

balance in interface TabletBalancer

getOnlineTabletsForTable

protected List<TabletStatistics> getOnlineTabletsForTable(TabletServerId tabletServerId,
                                                          TableId tableId)
                                                   throws AccumuloException,
                                                          AccumuloSecurityException

Throws:

AccumuloException

AccumuloSecurityException