Module org.elasticsearch.server

Package org.elasticsearch.cluster.routing.allocation

Class WriteLoadConstraintMonitor

java.lang.Object

org.elasticsearch.cluster.routing.allocation.WriteLoadConstraintMonitor

public class WriteLoadConstraintMonitor
extends Object

Monitors the node-level write thread pool usage across the cluster and initiates a rebalancing round (via RerouteService.reroute(java.lang.String, org.elasticsearch.common.Priority, org.elasticsearch.action.ActionListener<java.lang.Void>)) whenever a node crosses the node-level write load thresholds.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	HOTSPOT_DURATION_METRIC_NAME
static final String	HOTSPOT_NODES_COUNT_METRIC_NAME

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	WriteLoadConstraintMonitor(ClusterSettings clusterSettings, LongSupplier currentTimeMillisSupplier, Supplier<ClusterState> clusterStateSupplier, RerouteService rerouteService)
	WriteLoadConstraintMonitor(ClusterSettings clusterSettings, LongSupplier currentTimeMillisSupplier, Supplier<ClusterState> clusterStateSupplier, RerouteService rerouteService, MeterRegistry meterRegistry)

Method Summary

Modifier and Type	Method	Description
void	onNewInfo(ClusterInfo clusterInfo)	Receives a copy of the latest ClusterInfo whenever the ClusterInfoService collects it.

Methods inherited from class java.lang.Object

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

Field Details

HOTSPOT_NODES_COUNT_METRIC_NAME

public static final String HOTSPOT_NODES_COUNT_METRIC_NAME

See Also:

• Constant Field Values

HOTSPOT_DURATION_METRIC_NAME

public static final String HOTSPOT_DURATION_METRIC_NAME

See Also:

• Constant Field Values

Constructor Details

WriteLoadConstraintMonitor

protected WriteLoadConstraintMonitor(ClusterSettings clusterSettings,
 LongSupplier currentTimeMillisSupplier,
 Supplier<ClusterState> clusterStateSupplier,
 RerouteService rerouteService)

WriteLoadConstraintMonitor

public WriteLoadConstraintMonitor(ClusterSettings clusterSettings,
 LongSupplier currentTimeMillisSupplier,
 Supplier<ClusterState> clusterStateSupplier,
 RerouteService rerouteService,
 MeterRegistry meterRegistry)

Method Details

onNewInfo

public void onNewInfo(ClusterInfo clusterInfo)

Receives a copy of the latest ClusterInfo whenever the ClusterInfoService collects it. Processes the new NodeUsageStatsForThreadPools and initiates rebalancing, via reroute, if a node in the cluster exceeds thread pool usage thresholds.