org.apache.hadoop.hbase.regionserver

类 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

所有已实现的接口:

org.apache.hadoop.conf.Configurable

直接已知子类:

BusyRegionSplitPolicy, DelimitedKeyPrefixRegionSplitPolicy, KeyPrefixRegionSplitPolicy, SteppingSplitPolicy

@InterfaceAudience.Private
public class IncreasingToUpperBoundRegionSplitPolicy
extends ConstantSizeRegionSplitPolicy

Split size is the number of regions that are on this server that all are of the same table, cubed, times 2x the region flush size OR the maximum region split size, whichever is smaller.

For example, if the flush size is 128MB, then after two flushes (256MB) we will split which will make two regions that will split when their size is 2^3 * 128MB*2 = 2048MB.

If one of these regions splits, then there are three regions and now the split size is 3^3 * 128MB*2 = 6912MB, and so on until we reach the configured maximum file size and then from there on out, we'll use that.

字段概要

字段

限定符和类型	字段和说明
protected long	initialSize

从类继承的字段 org.apache.hadoop.hbase.regionserver.RegionSplitPolicy

region

构造器概要

构造器

构造器和说明
IncreasingToUpperBoundRegionSplitPolicy()

方法概要

限定符和类型	方法和说明
protected void	configureForRegion(HRegion region) Upon construction, this method will be called with the region to be governed.
protected long	getSizeToCheck(int tableRegionsCount)
protected boolean	shouldSplit()

从类继承的方法 org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy

positiveJitterRate

从类继承的方法 org.apache.hadoop.hbase.regionserver.RegionSplitPolicy

create, getSplitPoint, getSplitPolicyClass, skipStoreFileRangeCheck

从类继承的方法 org.apache.hadoop.conf.Configured

getConf, setConf

从类继承的方法 java.lang.Object

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

字段详细资料

initialSize

protected long initialSize

构造器详细资料

IncreasingToUpperBoundRegionSplitPolicy

public IncreasingToUpperBoundRegionSplitPolicy()

方法详细资料

configureForRegion

protected void configureForRegion(HRegion region)

从类复制的说明: RegionSplitPolicy

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

覆盖:

configureForRegion 在类中 ConstantSizeRegionSplitPolicy

shouldSplit

protected boolean shouldSplit()

覆盖:

shouldSplit 在类中 ConstantSizeRegionSplitPolicy

返回:

true if the specified region should be split.

getSizeToCheck

protected long getSizeToCheck(int tableRegionsCount)

返回:

Region max size or count of regions cubed * 2 * flushsize, which ever is smaller; guard against there being zero regions on this server.