org.elasticsearch.cluster.routing.allocation.decider
Class AllocationDecider

java.lang.Object
  org.elasticsearch.common.component.AbstractComponent
      org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider

Direct Known Subclasses:

AllocationDeciders, AwarenessAllocationDecider, ClusterRebalanceAllocationDecider, ConcurrentRebalanceAllocationDecider, DisableAllocationDecider, FilterAllocationDecider, RebalanceOnlyWhenActiveAllocationDecider, ReplicaAfterPrimaryActiveAllocationDecider, SameShardAllocationDecider, ShardsLimitAllocationDecider, ThrottlingAllocationDecider

public abstract class AllocationDecider
extends AbstractComponent

A pluggable logic allowing to control if allocation of a shard is allowed on a specific node.

Nested Class Summary

static class

AllocationDecider.Decision

Field Summary

Fields inherited from class org.elasticsearch.common.component.AbstractComponent

componentSettings, logger, settings

Constructor Summary

protected

AllocationDecider(Settings settings)

Method Summary

AllocationDecider.Decision	canAllocate(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation)
boolean	canRebalance(ShardRouting shardRouting, RoutingAllocation allocation)
boolean	canRemain(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation) Can the provided shard routing remain on the node?

Methods inherited from class org.elasticsearch.common.component.AbstractComponent

nodeName

Methods inherited from class java.lang.Object

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

Constructor Detail

AllocationDecider

protected AllocationDecider(Settings settings)

Method Detail

canRebalance

public boolean canRebalance(ShardRouting shardRouting,
                            RoutingAllocation allocation)

canAllocate

public AllocationDecider.Decision canAllocate(ShardRouting shardRouting,
                                              RoutingNode node,
                                              RoutingAllocation allocation)

canRemain

public boolean canRemain(ShardRouting shardRouting,
                         RoutingNode node,
                         RoutingAllocation allocation)

Can the provided shard routing remain on the node?