Class ConcurrentRebalanceAllocationDecider
java.lang.Object
org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider
org.elasticsearch.cluster.routing.allocation.decider.ConcurrentRebalanceAllocationDecider
public class ConcurrentRebalanceAllocationDecider extends AllocationDecider
Similar to the
ClusterRebalanceAllocationDecider
this
AllocationDecider
controls the number of currently in-progress
re-balance (relocation) operations and restricts node allocations if the
configured threshold is reached. The default number of concurrent rebalance
operations is set to 2
Re-balance operations can be controlled in real-time via the cluster update API using
cluster.routing.allocation.cluster_concurrent_rebalance
. Iff this
setting is set to -1
the number of concurrent re-balance operations
are unlimited.
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Field Summary
Fields Modifier and Type Field Description static Setting<java.lang.Integer>
CLUSTER_ROUTING_ALLOCATION_CLUSTER_CONCURRENT_REBALANCE_SETTING
static java.lang.String
NAME
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Constructor Summary
Constructors Constructor Description ConcurrentRebalanceAllocationDecider(Settings settings, ClusterSettings clusterSettings)
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Method Summary
Modifier and Type Method Description Decision
canRebalance(RoutingAllocation allocation)
Returns aDecision
whether the cluster can execute re-balanced operations at all.Decision
canRebalance(ShardRouting shardRouting, RoutingAllocation allocation)
Returns aDecision
whether the given shard routing can be re-balanced to the given allocation.Methods inherited from class org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider
canAllocate, canAllocate, canAllocate, canAllocate, canForceAllocatePrimary, canRemain, shouldAutoExpandToNode
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Field Details
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NAME
public static final java.lang.String NAME- See Also:
- Constant Field Values
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CLUSTER_ROUTING_ALLOCATION_CLUSTER_CONCURRENT_REBALANCE_SETTING
public static final Setting<java.lang.Integer> CLUSTER_ROUTING_ALLOCATION_CLUSTER_CONCURRENT_REBALANCE_SETTING
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Constructor Details
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Method Details
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canRebalance
Description copied from class:AllocationDecider
Returns aDecision
whether the given shard routing can be re-balanced to the given allocation. The default isDecision.ALWAYS
.- Overrides:
canRebalance
in classAllocationDecider
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canRebalance
Description copied from class:AllocationDecider
Returns aDecision
whether the cluster can execute re-balanced operations at all.Decision.ALWAYS
.- Overrides:
canRebalance
in classAllocationDecider
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