Package org.opensearch.cluster.routing

Interface Summary

Interface	Description
RerouteService	Asynchronously performs a cluster reroute, updating any shard states and rebalancing the cluster if appropriate.
RoutingChangesObserver	Records changes made to RoutingNodes during an allocation round.
ShardIterator	Allows to iterate over a set of shard instances (routing) within a shard id group.
ShardsIterator	Allows to iterate over unrelated shards.

Class Summary

Class	Description
AllocationId	Uniquely identifies an allocation.
BatchedRerouteService	A BatchedRerouteService is a RerouteService that batches together reroute requests to avoid unnecessary extra reroutes.
DelayedAllocationService	The DelayedAllocationService listens to cluster state changes and checks if there are unassigned shards with delayed allocation (unassigned shards that have the delay marker).
GroupShardsIterator<ShardIt extends java.lang.Comparable<ShardIt> & Countable>	This class implements a compilation of ShardIterators.
IndexRoutingTable	The IndexRoutingTable represents routing information for a single index.
IndexRoutingTable.Builder
IndexShardRoutingTable	IndexShardRoutingTable encapsulates all instances of a single shard.
IndexShardRoutingTable.Builder
Murmur3HashFunction	Hash function based on the Murmur3 algorithm, which is the default for OpenSearch.
OperationRouting
PlainShardIterator	The PlainShardIterator is a ShardsIterator which iterates all shards or a given shard id
PlainShardsIterator	A simple ShardsIterator that iterates a list or sub-list of shard indexRoutings.
RecoverySource	Represents the recovery source of a shard.
RecoverySource.EmptyStoreRecoverySource	Recovery from a fresh copy
RecoverySource.ExistingStoreRecoverySource	Recovery from an existing on-disk store
RecoverySource.LocalShardsRecoverySource	recovery from other shards on same node (shrink index action)
RecoverySource.PeerRecoverySource	peer recovery from a primary shard
RecoverySource.SnapshotRecoverySource	recovery from a snapshot
RotationShardShuffler	Basic ShardShuffler implementation that uses an AtomicInteger to generate seeds and uses a rotation to permute shards.
RoutingChangesObserver.AbstractRoutingChangesObserver	Abstract implementation of RoutingChangesObserver that does not take any action.
RoutingChangesObserver.DelegatingRoutingChangesObserver
RoutingNode	A RoutingNode represents a cluster node associated with a single DiscoveryNode including all shards that are hosted on that nodes.
RoutingNodes	RoutingNodes represents a copy the routing information contained in the cluster state.
RoutingNodes.UnassignedShards
RoutingTable	Represents a global cluster-wide routing table for all indices including the version of the current routing state.
RoutingTable.Builder	Builder for the routing table.
ShardRouting	ShardRouting immutably encapsulates information about shard indexRoutings like id, state, version, etc.
ShardShuffler	A shuffler for shards whose primary goal is to balance load.
UnassignedInfo	Holds additional information as to why the shard is in unassigned state.

Enum Summary

Enum	Description
Preference	Routing Preference Type
RecoverySource.Type
ShardRoutingState	Represents the current state of a ShardRouting as defined by the cluster.
UnassignedInfo.AllocationStatus	Captures the status of an unsuccessful allocation attempt for the shard, causing it to remain in the unassigned state.
UnassignedInfo.Reason	Reason why the shard is in unassigned state.

Exception Summary

Exception	Description
IllegalShardRoutingStateException	This exception defines illegal states of shard routing
RoutingException	A base Exceptions for all exceptions thrown by routing related operations.