Package org.apache.druid.server.coordinator.duty

Class BalanceSegments

java.lang.Object

org.apache.druid.server.coordinator.duty.BalanceSegments

All Implemented Interfaces:

CoordinatorDuty

public class BalanceSegments
extends Object
implements CoordinatorDuty

Coordinator Duty to balance segments across Historicals.

Constructor Summary

Constructors

Constructor	Description
BalanceSegments(org.joda.time.Duration coordinatorPeriod)

Method Summary

Modifier and Type	Method	Description
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

Constructor Details

BalanceSegments

public BalanceSegments(org.joda.time.Duration coordinatorPeriod)

Method Details

run

public DruidCoordinatorRuntimeParams run(DruidCoordinatorRuntimeParams params)

Description copied from interface: CoordinatorDuty

Implementations of this method run various activities performed by the coordinator. Input params can be used and modified. The returned DruidCoordinatorRuntimeParams is passed to the next duty.

Specified by:

run in interface CoordinatorDuty

Returns:

same as input or a modified value to be used by next duty. Null return values will prevent subsequent CoordinatorDuty objects (see the order in the lists passed into the constructor of DruidCoordinator.DutiesRunnable) from running until the next cycle.