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

Class RunRules

java.lang.Object

org.apache.druid.server.coordinator.duty.RunRules

All Implemented Interfaces:

CoordinatorDuty

public class RunRules
extends Object
implements CoordinatorDuty

Duty to run retention rules for all used non-overshadowed segments. Overshadowed segments are marked unused by MarkOvershadowedSegmentsAsUnused duty and are eventually unloaded from all servers by UnloadUnusedSegments.

The params returned from run() must have these fields initialized:

• DruidCoordinatorRuntimeParams.getBroadcastDatasources()

These fields are used by the downstream coordinator duty, BalanceSegments.

Constructor Summary

Constructors

Constructor	Description
RunRules(MetadataAction.DeleteSegments deleteHandler, MetadataAction.GetDatasourceRules ruleHandler)

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

RunRules

public RunRules(MetadataAction.DeleteSegments deleteHandler,
 MetadataAction.GetDatasourceRules ruleHandler)

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.