RegionSizeCalculator (Apache HBase 1.4.11 API)

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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()
```

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