Module org.elasticsearch.server
Class ConcurrentRebalanceAllocationDecider
java.lang.Object
org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider
org.elasticsearch.cluster.routing.allocation.decider.ConcurrentRebalanceAllocationDecider
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
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptioncanRebalance(RoutingAllocation allocation) We allow a limited number of concurrent shard relocations, per the cluster settingCLUSTER_ROUTING_ALLOCATION_CLUSTER_CONCURRENT_REBALANCE_SETTING.canRebalance(ShardRouting shardRouting, RoutingAllocation allocation) Returns aDecisionwhether 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, canAllocateReplicaWhenThereIsRetentionLease, canForceAllocateDuringReplace, canForceAllocatePrimary, canRemain, getForcedInitialShardAllocationToNodes, shouldAutoExpandToNode
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Field Details
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NAME
- See Also:
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CLUSTER_ROUTING_ALLOCATION_CLUSTER_CONCURRENT_REBALANCE_SETTING
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Constructor Details
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ConcurrentRebalanceAllocationDecider
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Method Details
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canRebalance
Description copied from class:AllocationDeciderReturns aDecisionwhether the given shard routing can be re-balanced to the given allocation. The default isDecision.ALWAYS.- Overrides:
canRebalancein classAllocationDecider
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canRebalance
We allow a limited number of concurrent shard relocations, per the cluster settingCLUSTER_ROUTING_ALLOCATION_CLUSTER_CONCURRENT_REBALANCE_SETTING. Returns aDecision.THROTTLEdecision if the limit is exceeded, otherwise returnsDecision.YES.- Overrides:
canRebalancein classAllocationDecider- Returns:
Decision.ALWAYSis returned by default if not overridden.
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