Package 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

Example CoordinatorCustomDuty for automatic deletion of terminated supervisors from the metadata storage. This duty has the same implementation as KillSupervisors but uses a different configuration style as detailed in CoordinatorCustomDuty.

This duty is only an example to demonstrate the usage of coordinator custom duties. All production clusters should continue using KillSupervisors.

Constructor Summary

Constructors

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

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

KillSupervisorsCustomDuty

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

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.