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

Class Summary

Class	Description
AllocationDecider	AllocationDecider is an abstract base class that allows to make dynamic cluster- or index-wide shard allocation decisions on a per-node basis.
AllocationDeciders	A composite AllocationDecider combining the "decision" of multiple AllocationDecider implementations into a single allocation decision.
AwarenessAllocationDecider	This AllocationDecider controls shard allocation based on awareness key-value pairs defined in the node configuration.
ClusterRebalanceAllocationDecider	This AllocationDecider controls re-balancing operations based on the cluster wide active shard state.
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.
Decision	This abstract class defining basic Decision used during shard allocation process.
Decision.Multi	Simple class representing a list of decisions
Decision.Single	Simple class representing a single decision
DiskThresholdDecider	The DiskThresholdDecider checks that the node a shard is potentially being allocated to has enough disk space.
EnableAllocationDecider	This allocation decider allows shard allocations / rebalancing via the cluster wide settings EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING / EnableAllocationDecider.CLUSTER_ROUTING_REBALANCE_ENABLE_SETTING and the per index setting EnableAllocationDecider.INDEX_ROUTING_ALLOCATION_ENABLE_SETTING / EnableAllocationDecider.INDEX_ROUTING_REBALANCE_ENABLE_SETTING.
FilterAllocationDecider	This AllocationDecider control shard allocation by include and exclude filters via dynamic cluster and index routing settings.
MaxRetryAllocationDecider	An allocation decider that prevents shards from being allocated on any node if the shards allocation has been retried N times without success.
NodeVersionAllocationDecider	An allocation decider that prevents relocation or allocation from nodes that might not be version compatible.
RebalanceOnlyWhenActiveAllocationDecider	Only allow rebalancing when all shards are active within the shard replication group.
ReplicaAfterPrimaryActiveAllocationDecider	An allocation strategy that only allows for a replica to be allocated when the primary is active.
RestoreInProgressAllocationDecider	This AllocationDecider prevents shards that have failed to be restored from a snapshot to be allocated.
SameShardAllocationDecider	An allocation decider that prevents multiple instances of the same shard to be allocated on the same node.
ShardsLimitAllocationDecider	This AllocationDecider limits the number of shards per node on a per index or node-wide basis.
SnapshotInProgressAllocationDecider	This AllocationDecider prevents shards that are currently been snapshotted to be moved to other nodes.
ThrottlingAllocationDecider	ThrottlingAllocationDecider controls the recovery process per node in the cluster.

Enum Summary

Enum	Description
ClusterRebalanceAllocationDecider.ClusterRebalanceType	An enum representation for the configured re-balance type.
Decision.Type	This enumeration defines the possible types of decisions
EnableAllocationDecider.Allocation	Allocation values or rather their string representation to be used used with EnableAllocationDecider.CLUSTER_ROUTING_ALLOCATION_ENABLE_SETTING / EnableAllocationDecider.INDEX_ROUTING_ALLOCATION_ENABLE_SETTING via cluster / index settings.
EnableAllocationDecider.Rebalance	Rebalance values or rather their string representation to be used used with EnableAllocationDecider.CLUSTER_ROUTING_REBALANCE_ENABLE_SETTING / EnableAllocationDecider.INDEX_ROUTING_REBALANCE_ENABLE_SETTING via cluster / index settings.