Package org.apache.iotdb.confignode.manager.load.balancer.region

Interface IRegionGroupAllocator

All Known Implementing Classes:

GreedyCopySetRegionGroupAllocator, GreedyRegionGroupAllocator, PartiteGraphReplicationRegionGroupAllocator

public interface IRegionGroupAllocator

Method Summary

Modifier and Type	Method	Description
TRegionReplicaSet	generateOptimalRegionReplicasDistribution(Map<Integer,TDataNodeConfiguration> availableDataNodeMap, Map<Integer,Double> freeDiskSpaceMap, List<TRegionReplicaSet> allocatedRegionGroups, List<TRegionReplicaSet> databaseAllocatedRegionGroups, int replicationFactor, TConsensusGroupId consensusGroupId)	Generate an optimal RegionReplicas' distribution for a new RegionGroup.

Method Details

generateOptimalRegionReplicasDistribution

TRegionReplicaSet generateOptimalRegionReplicasDistribution(Map<Integer,TDataNodeConfiguration> availableDataNodeMap,
 Map<Integer,Double> freeDiskSpaceMap,
 List<TRegionReplicaSet> allocatedRegionGroups,
 List<TRegionReplicaSet> databaseAllocatedRegionGroups,
 int replicationFactor,
 TConsensusGroupId consensusGroupId)

Generate an optimal RegionReplicas' distribution for a new RegionGroup.

Parameters:

availableDataNodeMap - DataNodes that can be used for allocation

freeDiskSpaceMap - The free disk space of the DataNodes

allocatedRegionGroups - Allocated RegionGroups

databaseAllocatedRegionGroups - Allocated RegionGroups within the same Database with the result

replicationFactor - Replication factor of TRegionReplicaSet

consensusGroupId - TConsensusGroupId of result TRegionReplicaSet

Returns:

The optimal TRegionReplicaSet derived by the specified algorithm