Class ResizeAllocationDecider
- java.lang.Object
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- org.elasticsearch.common.component.AbstractComponent
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- org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider
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- org.elasticsearch.cluster.routing.allocation.decider.ResizeAllocationDecider
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public class ResizeAllocationDecider extends AllocationDecider
An allocation decider that ensures we allocate the shards of a target index for resize operations next to the source primaries
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Field Summary
Fields Modifier and Type Field Description static java.lang.String
NAME
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Fields inherited from class org.elasticsearch.common.component.AbstractComponent
deprecationLogger, logger, settings
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Constructor Summary
Constructors Constructor Description ResizeAllocationDecider(Settings settings)
Initializes a newResizeAllocationDecider
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Decision
canAllocate(ShardRouting shardRouting, RoutingAllocation allocation)
Returns aDecision
whether the given shard routing can be allocated at all at this state of theRoutingAllocation
.Decision
canAllocate(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation)
Returns aDecision
whether the given shard routing can be allocated on the given node.Decision
canForceAllocatePrimary(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation)
Returns aDecision
whether the given primary shard can be forcibly allocated on the given node.-
Methods inherited from class org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider
canAllocate, canAllocate, canRebalance, canRebalance, canRemain
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Methods inherited from class org.elasticsearch.common.component.AbstractComponent
nodeName
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Field Detail
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NAME
public static final java.lang.String NAME
- See Also:
- Constant Field Values
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Constructor Detail
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ResizeAllocationDecider
public ResizeAllocationDecider(Settings settings)
Initializes a newResizeAllocationDecider
- Parameters:
settings
-Settings
used by thisAllocationDecider
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Method Detail
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canAllocate
public Decision canAllocate(ShardRouting shardRouting, RoutingAllocation allocation)
Description copied from class:AllocationDecider
Returns aDecision
whether the given shard routing can be allocated at all at this state of theRoutingAllocation
. The default isDecision.ALWAYS
.- Overrides:
canAllocate
in classAllocationDecider
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canAllocate
public Decision canAllocate(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation)
Description copied from class:AllocationDecider
Returns aDecision
whether the given shard routing can be allocated on the given node. The default isDecision.ALWAYS
.- Overrides:
canAllocate
in classAllocationDecider
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canForceAllocatePrimary
public Decision canForceAllocatePrimary(ShardRouting shardRouting, RoutingNode node, RoutingAllocation allocation)
Description copied from class:AllocationDecider
Returns aDecision
whether the given primary shard can be forcibly allocated on the given node. This method should only be called for unassigned primary shards where the node has a shard copy on disk. Note: all implementations that override this behavior should take into account the results ofAllocationDecider.canAllocate(ShardRouting, RoutingNode, RoutingAllocation)
before making a decision on force allocation, because force allocation should only be considered if all deciders returnDecision.NO
.- Overrides:
canForceAllocatePrimary
in classAllocationDecider
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