Package org.elasticsearch.cluster.routing.allocation.decider

Class NodeVersionAllocationDecider

java.lang.Object

org.elasticsearch.common.component.AbstractComponent

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

org.elasticsearch.cluster.routing.allocation.decider.NodeVersionAllocationDecider

public class NodeVersionAllocationDecider
extends AllocationDecider

An allocation decider that prevents relocation or allocation from nodes that might not be version compatible. If we relocate from a node that runs a newer version than the node we relocate to this might cause IndexFormatTooNewException on the lowest level since it might have already written segments that use a new postings format or codec that is not available on the target node.

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	NAME

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

deprecationLogger, logger, settings

Constructor Summary

Constructors

Constructor	Description
NodeVersionAllocationDecider(Settings settings)

Method Summary

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

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

logDeprecatedSetting, logRemovedSetting, nodeName

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

canAllocate, canAllocate, canAllocate, canForceAllocatePrimary, canRebalance, canRebalance, canRemain

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final java.lang.String NAME

See Also:

Constant Field Values

Constructor Detail

NodeVersionAllocationDecider

public NodeVersionAllocationDecider(Settings settings)

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