Package org.elasticsearch.cluster.metadata

Class AutoExpandReplicas

java.lang.Object

org.elasticsearch.cluster.metadata.AutoExpandReplicas

public final class AutoExpandReplicas
extends Object

This class acts as a functional wrapper around the index.auto_expand_replicas setting. This setting or rather it's value is expanded into a min and max value which requires special handling based on the number of datanodes in the cluster. This class handles all the parsing and streamlines the access to these values.

Field Summary

Fields

Modifier and Type	Field	Description
static Setting<AutoExpandReplicas>	SETTING

Method Summary

Modifier and Type	Method	Description
boolean	expandToAllNodes()
static Map<Integer,List<String>>	getAutoExpandReplicaChanges(Metadata metadata, RoutingAllocation allocation)	Checks if there are replicas with the auto-expand feature that need to be adapted.
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

SETTING

public static final Setting<AutoExpandReplicas> SETTING

Method Details

expandToAllNodes

public boolean expandToAllNodes()

toString

public String toString()

Overrides:

toString in class Object

getAutoExpandReplicaChanges

public static Map<Integer,List<String>> getAutoExpandReplicaChanges(Metadata metadata,
 RoutingAllocation allocation)

Checks if there are replicas with the auto-expand feature that need to be adapted. Returns a map of updates, which maps the indices to be updated to the desired number of replicas. The map has the desired number of replicas as key and the indices to update as value, as this allows the result of this method to be directly applied to RoutingTable.Builder#updateNumberOfReplicas.