org.apache.druid.server.coordinator.duty

Class KillSupervisorsCustomDuty

java.lang.Object

org.apache.druid.server.coordinator.duty.KillSupervisorsCustomDuty

All Implemented Interfaces:

CoordinatorCustomDuty, CoordinatorDuty

public class KillSupervisorsCustomDuty
extends Object
implements CoordinatorCustomDuty

CoordinatorDuty for automatic deletion of terminated supervisors from the supervisor table in metadata storage. This class has the same purpose as KillSupervisors but uses a different configuration style as detailed in CoordinatorCustomDuty. This class primary purpose is as an example to demostrate the usuage of the CoordinatorCustomDuty ExtensionPoint Production use case should still use KillSupervisors. In the future, we might migrate all metadata management coordinator duties to CoordinatorCustomDuty but until then this class will remains undocumented and should not be use in production.

Constructor Summary

Constructors

Constructor and Description
KillSupervisorsCustomDuty(org.joda.time.Duration retainDuration, MetadataSupervisorManager metadataSupervisorManager)

Method Summary

Modifier and Type	Method and 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 Detail

KillSupervisorsCustomDuty

public KillSupervisorsCustomDuty(org.joda.time.Duration retainDuration,
                                 MetadataSupervisorManager metadataSupervisorManager)

Method Detail

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.