Package org.apache.iotdb.db.engine.storagegroup.dataregion

Class HashVirtualPartitioner

java.lang.Object

org.apache.iotdb.db.engine.storagegroup.dataregion.HashVirtualPartitioner

All Implemented Interfaces:

VirtualPartitioner

public class HashVirtualPartitioner
extends java.lang.Object
implements VirtualPartitioner

Field Summary

Fields

Modifier and Type	Field	Description
static int	STORAGE_GROUP_NUM	total number of virtual storage groups

Method Summary

Modifier and Type	Method	Description
int	deviceToDataRegionId(org.apache.iotdb.commons.path.PartialPath deviceId)	use device id to determine storage group id
static HashVirtualPartitioner	getInstance()
int	getPartitionCount()	get total number of data region

Methods inherited from class java.lang.Object

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

Field Detail

STORAGE_GROUP_NUM

public static int STORAGE_GROUP_NUM

total number of virtual storage groups

Method Detail

getInstance

public static HashVirtualPartitioner getInstance()

deviceToDataRegionId

public int deviceToDataRegionId(org.apache.iotdb.commons.path.PartialPath deviceId)

Description copied from interface: VirtualPartitioner

use device id to determine storage group id

Specified by:

deviceToDataRegionId in interface VirtualPartitioner

Parameters:

deviceId - device id

Returns:

data region id

getPartitionCount

public int getPartitionCount()

Description copied from interface: VirtualPartitioner

get total number of data region

Specified by:

getPartitionCount in interface VirtualPartitioner

Returns:

total number of data region