org.elasticsearch.cluster.routing.allocation.decider

Class EnableAllocationDecider

java.lang.Object

org.elasticsearch.common.component.AbstractComponent

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

org.elasticsearch.cluster.routing.allocation.decider.EnableAllocationDecider

All Implemented Interfaces:

NodeSettingsService.Listener

public class EnableAllocationDecider
extends AllocationDecider
implements NodeSettingsService.Listener

This allocation decider allows shard allocations via the cluster wide settings CLUSTER_ROUTING_ALLOCATION_ENABLE and the per index setting INDEX_ROUTING_ALLOCATION_ENABLE. The per index settings overrides the cluster wide setting. Depending on the Both settings can have the following values:

• NONE, no shard allocation is allowed.
• NEW_PRIMARIES only primary shards of new indices are allowed to be allocated
• PRIMARIES only primary shards (of any index) are allowed to be allocated
• ALL all shards are allowed to be allocated

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EnableAllocationDecider.Allocation

Field Summary

Fields

Modifier and Type	Field and Description
static String	CLUSTER_ROUTING_ALLOCATION_ENABLE
static String	INDEX_ROUTING_ALLOCATION_ENABLE
static String	NAME

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

componentSettings, logger, settings

Constructor Summary

Constructors

Constructor and Description
EnableAllocationDecider(Settings settings, NodeSettingsService nodeSettingsService)

Method Summary

Modifier and Type	Method and Description
Decision	canAllocate(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation) Returns a Decision whether the given shard routing can be allocated on the given node.
void	onRefreshSettings(Settings settings)

Methods inherited from class org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider

canAllocate, canAllocate, canRebalance, canRebalance, canRemain

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

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

CLUSTER_ROUTING_ALLOCATION_ENABLE

public static final String CLUSTER_ROUTING_ALLOCATION_ENABLE

See Also:

Constant Field Values

INDEX_ROUTING_ALLOCATION_ENABLE

public static final String INDEX_ROUTING_ALLOCATION_ENABLE

See Also:

Constant Field Values

Constructor Detail

EnableAllocationDecider

@Inject
public EnableAllocationDecider(Settings settings,
                                       NodeSettingsService nodeSettingsService)

Method Detail

canAllocate

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

Description copied from class: AllocationDecider

Returns a Decision whether the given shard routing can be allocated on the given node. The default is Decision.ALWAYS.

Overrides:

canAllocate in class AllocationDecider

onRefreshSettings

public void onRefreshSettings(Settings settings)

Specified by:

onRefreshSettings in interface NodeSettingsService.Listener