org.apache.hadoop.hbase.regionserver

Class IncreasingToUpperBoundRegionSplitPolicy

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hbase.regionserver.RegionSplitPolicy

org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy

org.apache.hadoop.hbase.regionserver.IncreasingToUpperBoundRegionSplitPolicy

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable

Direct Known Subclasses:

DelimitedKeyPrefixRegionSplitPolicy, KeyPrefixRegionSplitPolicy

public class IncreasingToUpperBoundRegionSplitPolicy
extends ConstantSizeRegionSplitPolicy

Split size is the number of regions that are on this server that all are of the same table, squared, times the region flush size OR the maximum region split size, whichever is smaller. For example, if the flush size is 128M, then on first flush we will split which will make two regions that will split when their size is 2 * 2 * 128M = 512M. If one of these regions splits, then there are three regions and now the split size is 3 * 3 * 128M = 1152M, and so on until we reach the configured maximum filesize and then from there on out, we'll use that.

Field Summary

Fields inherited from class org.apache.hadoop.hbase.regionserver.RegionSplitPolicy

region

Constructor Summary

Constructors

Constructor and Description
IncreasingToUpperBoundRegionSplitPolicy()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	configureForRegion(HRegion region) Upon construction, this method will be called with the region to be governed.
protected boolean	shouldSplit()

Methods inherited from class org.apache.hadoop.hbase.regionserver.RegionSplitPolicy

create, getSplitPoint

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Constructor Detail

IncreasingToUpperBoundRegionSplitPolicy

public IncreasingToUpperBoundRegionSplitPolicy()

Method Detail

configureForRegion

protected void configureForRegion(HRegion region)

Description copied from class: RegionSplitPolicy

Upon construction, this method will be called with the region to be governed. It will be called once and only once.

Overrides:

configureForRegion in class ConstantSizeRegionSplitPolicy

shouldSplit

protected boolean shouldSplit()

Overrides:

shouldSplit in class ConstantSizeRegionSplitPolicy

Returns:

true if the specified region should be split.