程序包 org.apache.iotdb.confignode.manager.load

类 LoadManager

java.lang.Object

org.apache.iotdb.confignode.manager.load.LoadManager

public class LoadManager
extends java.lang.Object

The LoadManager at ConfigNodeGroup-Leader is active. It proactively implements the cluster dynamic load balancing policy and passively accepts the PartitionTable expansion request.

构造器概要

构造器

构造器	说明
LoadManager(IManager configManager)

方法概要

修饰符和类型	方法	说明
java.util.Map<java.lang.String,org.apache.iotdb.commons.partition.DataPartitionTable>	allocateDataPartition(java.util.Map<java.lang.String,java.util.Map<org.apache.iotdb.common.rpc.thrift.TSeriesPartitionSlot,org.apache.iotdb.confignode.rpc.thrift.TTimeSlotList>> unassignedDataPartitionSlotsMap)	Allocate DataPartitions
CreateRegionGroupsPlan	allocateRegionGroups(java.util.Map<java.lang.String,java.lang.Integer> allotmentMap, org.apache.iotdb.common.rpc.thrift.TConsensusGroupType consensusGroupType)	Generate an optimal CreateRegionGroupsPlan
java.util.Map<java.lang.String,org.apache.iotdb.commons.partition.SchemaPartitionTable>	allocateSchemaPartition(java.util.Map<java.lang.String,java.util.List<org.apache.iotdb.common.rpc.thrift.TSeriesPartitionSlot>> unassignedSchemaPartitionSlotsMap)	Allocate SchemaPartitions
void	broadcastLatestRegionRouteMap()
java.util.Map<org.apache.iotdb.common.rpc.thrift.TConsensusGroupId,java.lang.Integer>	getLatestRegionLeaderMap()
java.util.Map<org.apache.iotdb.common.rpc.thrift.TConsensusGroupId,org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet>	getLatestRegionRouteMap()	Generate an optimal real-time read/write requests routing policy.
RouteBalancer	getRouteBalancer()
void	initHeartbeatCache()	Initialize all kinds of the HeartbeatCache when the ConfigNode-Leader is switched
void	startLoadStatisticsService()	Start the load statistics service
void	stopLoadStatisticsService()	Stop the load statistics service

从类继承的方法 java.lang.Object

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

构造器详细资料

LoadManager

public LoadManager(IManager configManager)

方法详细资料

allocateRegionGroups

public CreateRegionGroupsPlan allocateRegionGroups(java.util.Map<java.lang.String,java.lang.Integer> allotmentMap,
                                                   org.apache.iotdb.common.rpc.thrift.TConsensusGroupType consensusGroupType)
                                            throws NotEnoughDataNodeException,
                                                   StorageGroupNotExistsException

Generate an optimal CreateRegionGroupsPlan

参数:

allotmentMap - Map

consensusGroupType - TConsensusGroupType of RegionGroup to be allocated

返回:

CreateRegionGroupsPlan

抛出:

NotEnoughDataNodeException - If there are not enough DataNodes

StorageGroupNotExistsException - If some specific StorageGroups don't exist

allocateSchemaPartition

public java.util.Map<java.lang.String,org.apache.iotdb.commons.partition.SchemaPartitionTable> allocateSchemaPartition(java.util.Map<java.lang.String,java.util.List<org.apache.iotdb.common.rpc.thrift.TSeriesPartitionSlot>> unassignedSchemaPartitionSlotsMap)
                                                                                                                      throws NoAvailableRegionGroupException

Allocate SchemaPartitions

参数:

unassignedSchemaPartitionSlotsMap - SchemaPartitionSlots that should be assigned

返回:

Map, the allocating result

抛出:

NoAvailableRegionGroupException

allocateDataPartition

public java.util.Map<java.lang.String,org.apache.iotdb.commons.partition.DataPartitionTable> allocateDataPartition(java.util.Map<java.lang.String,java.util.Map<org.apache.iotdb.common.rpc.thrift.TSeriesPartitionSlot,org.apache.iotdb.confignode.rpc.thrift.TTimeSlotList>> unassignedDataPartitionSlotsMap)
                                                                                                                  throws NoAvailableRegionGroupException

Allocate DataPartitions

参数:

unassignedDataPartitionSlotsMap - DataPartitionSlots that should be assigned

返回:

Map, the allocating result

抛出:

NoAvailableRegionGroupException

getLatestRegionLeaderMap

public java.util.Map<org.apache.iotdb.common.rpc.thrift.TConsensusGroupId,java.lang.Integer> getLatestRegionLeaderMap()

getLatestRegionRouteMap

public java.util.Map<org.apache.iotdb.common.rpc.thrift.TConsensusGroupId,org.apache.iotdb.common.rpc.thrift.TRegionReplicaSet> getLatestRegionRouteMap()

Generate an optimal real-time read/write requests routing policy.

返回:

Map, The routing policy of read/write requests for each Region is based on the order in the TRegionReplicaSet. The replica with higher sorting result have higher priority.

startLoadStatisticsService

public void startLoadStatisticsService()

Start the load statistics service

stopLoadStatisticsService

public void stopLoadStatisticsService()

Stop the load statistics service

broadcastLatestRegionRouteMap

public void broadcastLatestRegionRouteMap()

initHeartbeatCache

public void initHeartbeatCache()

Initialize all kinds of the HeartbeatCache when the ConfigNode-Leader is switched

getRouteBalancer

public RouteBalancer getRouteBalancer()