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

Class GreedyRegionGroupAllocator

java.lang.Object

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

All Implemented Interfaces:

IRegionGroupAllocator

public class GreedyRegionGroupAllocator
extends Object
implements IRegionGroupAllocator

Allocate Region Greedily

Constructor Summary

Constructors

Constructor	Description
GreedyRegionGroupAllocator()

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.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GreedyRegionGroupAllocator

public GreedyRegionGroupAllocator()

Method Details

generateOptimalRegionReplicasDistribution

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

Description copied from interface: IRegionGroupAllocator

Generate an optimal RegionReplicas' distribution for a new RegionGroup.

Specified by:

generateOptimalRegionReplicasDistribution in interface IRegionGroupAllocator

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