Module org.elasticsearch.server

Package org.elasticsearch.cluster.coordination.stateless

Class SingleNodeReconfigurator

java.lang.Object

org.elasticsearch.cluster.coordination.Reconfigurator

org.elasticsearch.cluster.coordination.stateless.SingleNodeReconfigurator

public class SingleNodeReconfigurator
extends Reconfigurator

Field Summary

Fields inherited from class org.elasticsearch.cluster.coordination.Reconfigurator

CLUSTER_AUTO_SHRINK_VOTING_CONFIGURATION

Constructor Summary

Constructors

Constructor	Description
SingleNodeReconfigurator(Settings settings, ClusterSettings clusterSettings)

Method Summary

Modifier and Type	Method	Description
void	ensureVotingConfigCanBeModified()
ClusterState	maybeReconfigureAfterNewMasterIsElected(ClusterState clusterState)
CoordinationMetadata.VotingConfiguration	reconfigure(Set<DiscoveryNode> liveNodes, Set<String> retiredNodeIds, DiscoveryNode currentMaster, CoordinationMetadata.VotingConfiguration currentConfig)	Compute an optimal configuration for the cluster.

Methods inherited from class org.elasticsearch.cluster.coordination.Reconfigurator

setAutoShrinkVotingConfiguration, toString

Methods inherited from class java.lang.Object

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

Constructor Details

SingleNodeReconfigurator

public SingleNodeReconfigurator(Settings settings,
 ClusterSettings clusterSettings)

Method Details

reconfigure

public CoordinationMetadata.VotingConfiguration reconfigure(Set<DiscoveryNode> liveNodes,
 Set<String> retiredNodeIds,
 DiscoveryNode currentMaster,
 CoordinationMetadata.VotingConfiguration currentConfig)

Description copied from class: Reconfigurator

Compute an optimal configuration for the cluster.

Overrides:

reconfigure in class Reconfigurator

Parameters:

liveNodes - The live nodes in the cluster. The optimal configuration prefers live nodes over non-live nodes as far as possible.

retiredNodeIds - Nodes that are leaving the cluster and which should not appear in the configuration if possible. Nodes that are retired and not in the current configuration will never appear in the resulting configuration; this is useful for shifting the vote in a 2-node cluster so one of the nodes can be restarted without harming availability.

currentMaster - The current master. Unless retired, we prefer to keep the current master in the config.

currentConfig - The current configuration. As far as possible, we prefer to keep the current config as-is.

Returns:

An optimal configuration, or leave the current configuration unchanged if the optimal configuration has no live quorum.

maybeReconfigureAfterNewMasterIsElected

public ClusterState maybeReconfigureAfterNewMasterIsElected(ClusterState clusterState)

Overrides:

maybeReconfigureAfterNewMasterIsElected in class Reconfigurator

ensureVotingConfigCanBeModified

public void ensureVotingConfigCanBeModified()

Overrides:

ensureVotingConfigCanBeModified in class Reconfigurator