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

Class CloneHistoricals

java.lang.Object

org.apache.druid.server.coordinator.duty.CloneHistoricals

All Implemented Interfaces:

CoordinatorDuty

public class CloneHistoricals
extends Object
implements CoordinatorDuty

Handles cloning of historicals. Given the historical to historical clone mappings, based on CoordinatorDynamicConfig.getCloneServers(), copies any segments load or unload requests from the source historical to the target historical.

Constructor Summary

Constructors

Constructor	Description
CloneHistoricals(SegmentLoadQueueManager loadQueueManager, CloneStatusManager cloneStatusManager)

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

CloneHistoricals

public CloneHistoricals(SegmentLoadQueueManager loadQueueManager,
 CloneStatusManager cloneStatusManager)

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.