org.apache.druid.server.coordinator.duty

Class EmitClusterStatsAndMetrics

java.lang.Object

org.apache.druid.server.coordinator.duty.EmitClusterStatsAndMetrics

All Implemented Interfaces:

CoordinatorDuty

public class EmitClusterStatsAndMetrics
extends Object
implements CoordinatorDuty

Emits stats of the cluster and metrics of the coordination (including segment balancing) process.

Field Summary

Fields

Modifier and Type	Field and Description
static String	MAX_REPLICATION_FACTOR
static String	TOTAL_CAPACITY
static String	TOTAL_HISTORICAL_COUNT

Constructor Summary

Constructors

Constructor and Description
EmitClusterStatsAndMetrics(DruidCoordinator coordinator)

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

Field Detail

TOTAL_CAPACITY

public static final String TOTAL_CAPACITY

See Also:

Constant Field Values

TOTAL_HISTORICAL_COUNT

public static final String TOTAL_HISTORICAL_COUNT

See Also:

Constant Field Values

MAX_REPLICATION_FACTOR

public static final String MAX_REPLICATION_FACTOR

See Also:

Constant Field Values

Constructor Detail

EmitClusterStatsAndMetrics

public EmitClusterStatsAndMetrics(DruidCoordinator coordinator)

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.