io.druid.server.coordinator.helper

Class DruidCoordinatorBalancer

java.lang.Object

io.druid.server.coordinator.helper.DruidCoordinatorBalancer

All Implemented Interfaces:

DruidCoordinatorHelper

public class DruidCoordinatorBalancer
extends Object
implements DruidCoordinatorHelper

Field Summary

Fields

Modifier and Type	Field and Description
protected DruidCoordinator	coordinator
protected Map<String,ConcurrentHashMap<String,BalancerSegmentHolder>>	currentlyMovingSegments
protected static EmittingLogger	log
static Comparator<ServerHolder>	percentUsedComparator

Constructor Summary

Constructors

Constructor and Description
DruidCoordinatorBalancer(DruidCoordinator coordinator)

Method Summary

Modifier and Type	Method and Description
protected void	moveSegment(BalancerSegmentHolder segment, ImmutableDruidServer toServer, DruidCoordinatorRuntimeParams params)
protected void	reduceLifetimes(String tier)
DruidCoordinatorRuntimeParams	run(DruidCoordinatorRuntimeParams params) Implementations of this method run various activities performed by the coordinator.

Methods inherited from class java.lang.Object

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

Field Detail

percentUsedComparator

public static final Comparator<ServerHolder> percentUsedComparator

log

protected static final EmittingLogger log

coordinator

protected final DruidCoordinator coordinator

currentlyMovingSegments

protected final Map<String,ConcurrentHashMap<String,BalancerSegmentHolder>> currentlyMovingSegments

Constructor Detail

DruidCoordinatorBalancer

public DruidCoordinatorBalancer(DruidCoordinator coordinator)

Method Detail

reduceLifetimes

protected void reduceLifetimes(String tier)

run

public DruidCoordinatorRuntimeParams run(DruidCoordinatorRuntimeParams params)

Description copied from interface: DruidCoordinatorHelper

Implementations of this method run various activities performed by the coordinator. Input params can be used and modified. They are typically in a list and returned DruidCoordinatorRuntimeParams is passed to the next helper.

Specified by:

run in interface DruidCoordinatorHelper

Returns:

same as input or a modified value to be used by next helper.

moveSegment

protected void moveSegment(BalancerSegmentHolder segment,
                           ImmutableDruidServer toServer,
                           DruidCoordinatorRuntimeParams params)