org.apache.hadoop.hbase.util

Class RegionSizeCalculator

java.lang.Object

org.apache.hadoop.hbase.util.RegionSizeCalculator

@InterfaceStability.Evolving
@InterfaceAudience.Private
public class RegionSizeCalculator
extends Object

Computes size of each region for given table and given column families. The value is used by MapReduce for better scheduling.

Constructor Summary

Constructors

Constructor and Description
RegionSizeCalculator(HTable table) Deprecated. Use RegionSizeCalculator(RegionLocator, Admin) instead.
RegionSizeCalculator(RegionLocator regionLocator, Admin admin) Computes size of each region for table and given column families.

Method Summary

Methods

Modifier and Type	Method and Description
long	getRegionSize(byte[] regionId) Returns size of given region in bytes.
Map<byte[],Long>	getRegionSizeMap()

Methods inherited from class java.lang.Object

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

Constructor Detail

RegionSizeCalculator

@Deprecated
public RegionSizeCalculator(HTable table)
                     throws IOException

Deprecated. Use RegionSizeCalculator(RegionLocator, Admin) instead.

Computes size of each region for table and given column families.

Throws:

IOException

RegionSizeCalculator

public RegionSizeCalculator(RegionLocator regionLocator,
                    Admin admin)
                     throws IOException

Computes size of each region for table and given column families.

Throws:

IOException

Method Detail

getRegionSize

public long getRegionSize(byte[] regionId)

Returns size of given region in bytes. Returns 0 if region was not found.

getRegionSizeMap

public Map<byte[],Long> getRegionSizeMap()