Package org.elasticsearch.cluster.coordination

Class LagDetector

java.lang.Object

org.elasticsearch.cluster.coordination.LagDetector

public class LagDetector
extends Object

A publication can succeed and complete before all nodes have applied the published state and acknowledged it; however we need every node eventually either to apply the published state (or a later state) or be removed from the cluster. This component achieves this by removing any lagging nodes from the cluster after a timeout.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	LagDetector.LagListener

Field Summary

Fields

Modifier and Type	Field	Description
static final Setting<TimeValue>	CLUSTER_FOLLOWER_LAG_TIMEOUT_SETTING

Constructor Summary

Constructors

Constructor	Description
LagDetector(Settings settings, ThreadPool threadPool, LagDetector.LagListener lagListener, Supplier<DiscoveryNode> localNodeSupplier)

Method Summary

Modifier and Type	Method	Description
void	clearTrackedNodes()
void	setAppliedVersion(DiscoveryNode discoveryNode, long appliedVersion)
void	setTrackedNodes(Iterable<DiscoveryNode> discoveryNodes)
void	startLagDetector(long version)
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

CLUSTER_FOLLOWER_LAG_TIMEOUT_SETTING

public static final Setting<TimeValue> CLUSTER_FOLLOWER_LAG_TIMEOUT_SETTING

Constructor Details

LagDetector

public LagDetector(Settings settings,
 ThreadPool threadPool,
 LagDetector.LagListener lagListener,
 Supplier<DiscoveryNode> localNodeSupplier)

Method Details

setTrackedNodes

public void setTrackedNodes(Iterable<DiscoveryNode> discoveryNodes)

clearTrackedNodes

public void clearTrackedNodes()

setAppliedVersion

public void setAppliedVersion(DiscoveryNode discoveryNode,
 long appliedVersion)

startLagDetector

public void startLagDetector(long version)

toString

public String toString()

Overrides:

toString in class Object