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

Class CoordinatorDutyUtils

java.lang.Object

org.apache.druid.server.coordinator.duty.CoordinatorDutyUtils

public class CoordinatorDutyUtils
extends Object

utilty methods that are useful for coordinator duties

Constructor Summary

Constructors

Constructor	Description
CoordinatorDutyUtils()

Method Summary

Modifier and Type	Method	Description
static List<org.apache.druid.indexer.TaskStatusPlus>	getNumActiveTaskSlots(OverlordClient overlordClient, com.google.common.base.Predicate<org.apache.druid.indexer.TaskStatusPlus> taskPredicate)	Return the number of active tasks that match the task predicate provided.
static int	getTotalWorkerCapacity(OverlordClient overlordClient)	Returns the total worker capacity in the cluster, including autoscaling, if enabled.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CoordinatorDutyUtils

public CoordinatorDutyUtils()

Method Detail

getTotalWorkerCapacity

public static int getTotalWorkerCapacity(@Nonnull
                                         OverlordClient overlordClient)

Returns the total worker capacity in the cluster, including autoscaling, if enabled.

Parameters:

overlordClient - The overlord client used to get worker capacity info.

Returns:

the total worker capacity in the cluster, including autoscaling, if enabled.

getNumActiveTaskSlots

public static List<org.apache.druid.indexer.TaskStatusPlus> getNumActiveTaskSlots(@Nonnull
                                                                                  OverlordClient overlordClient,
                                                                                  com.google.common.base.Predicate<org.apache.druid.indexer.TaskStatusPlus> taskPredicate)

Return the number of active tasks that match the task predicate provided. The number of active tasks returned may be an overestimate, as tasks that return status's with null types will be conservatively counted to match the predicate provided.

Parameters:

overlordClient - The overlord client to use to retrieve the list of active tasks.

taskPredicate - The predicate to match against the list of retreived task status. This predicate will never be called with a null task status.

Returns:

the number of active tasks that match the task predicate provided