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

Class ReplicaAfterPrimaryActiveAllocationDecider

java.lang.Object

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

org.elasticsearch.cluster.routing.allocation.decider.ReplicaAfterPrimaryActiveAllocationDecider

public class ReplicaAfterPrimaryActiveAllocationDecider
extends AllocationDecider

An allocation strategy that only allows for a replica to be allocated when the primary is active.

Constructor Summary

Constructors

Constructor	Description
ReplicaAfterPrimaryActiveAllocationDecider()

Method Summary

Modifier and Type	Method	Description
Decision	canAllocate(ShardRouting shardRouting, RoutingAllocation allocation)	Returns a Decision whether the given shard routing can be allocated at all at this state of the RoutingAllocation.
Decision	canAllocate(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation)	Returns a Decision whether the given shard routing can be allocated on the given node.
Decision	canForceAllocateDuringReplace(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation)	Returns a Decision whether the given shard can be forced to the given node in the event that the shard's source node is being replaced.

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

canAllocate, canAllocateReplicaWhenThereIsRetentionLease, canForceAllocatePrimary, canRebalance, canRebalance, canRemain, shouldAutoExpandToNode

Methods inherited from class java.lang.Object

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

Constructor Details

ReplicaAfterPrimaryActiveAllocationDecider

public ReplicaAfterPrimaryActiveAllocationDecider()

Method Details

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

canAllocate

public Decision canAllocate(ShardRouting shardRouting,
 RoutingAllocation allocation)

Description copied from class: AllocationDecider

Returns a Decision whether the given shard routing can be allocated at all at this state of the RoutingAllocation. The default is Decision.ALWAYS.

Overrides:

canAllocate in class AllocationDecider

canForceAllocateDuringReplace

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

Description copied from class: AllocationDecider

Returns a Decision whether the given shard can be forced to the given node in the event that the shard's source node is being replaced. This allows nodes using a replace-type node shutdown to override certain deciders in the interest of moving the shard away from a node that *must* be removed. It defaults to returning "YES" and must be overridden by deciders that opt-out to having their other NO decisions *not* overridden while vacating. The caller is responsible for first checking: - that a replacement is ongoing - the shard routing's current node is the source of the replacement

Overrides:

canForceAllocateDuringReplace in class AllocationDecider