org.apache.hadoop.hbase.regionserver

类 BusyRegionSplitPolicy

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

org.apache.hadoop.hbase.regionserver.BusyRegionSplitPolicy

所有已实现的接口:

org.apache.hadoop.conf.Configurable

@InterfaceAudience.LimitedPrivate(value="Configuration")
public class BusyRegionSplitPolicy
extends IncreasingToUpperBoundRegionSplitPolicy

This class represents a split policy which makes the split decision based on how busy a region is. The metric that is used here is the fraction of total write requests that are blocked due to high memstore utilization. This fractional rate is calculated over a running window of "hbase.busy.policy.aggWindow" milliseconds. The rate is a time-weighted aggregated average of the rate in the current window and the true average rate in the previous window.

字段概要

字段

限定符和类型	字段和说明
static long	DEFAULT_AGGREGATION_WINDOW
static float	DEFAULT_MAX_BLOCKED_REQUESTS
static long	DEFAULT_MIN_AGE_MS

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

initialSize

构造器概要

构造器

构造器和说明
BusyRegionSplitPolicy()

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 boolean	shouldSplit()

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

getSizeToCheck

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

DEFAULT_MAX_BLOCKED_REQUESTS

public static final float DEFAULT_MAX_BLOCKED_REQUESTS

另请参阅:

常量字段值

DEFAULT_MIN_AGE_MS

public static final long DEFAULT_MIN_AGE_MS

另请参阅:

常量字段值

DEFAULT_AGGREGATION_WINDOW

public static final long DEFAULT_AGGREGATION_WINDOW

另请参阅:

常量字段值

构造器详细资料

BusyRegionSplitPolicy

public BusyRegionSplitPolicy()

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 IncreasingToUpperBoundRegionSplitPolicy

shouldSplit

protected boolean shouldSplit()

覆盖:

shouldSplit 在类中 IncreasingToUpperBoundRegionSplitPolicy

返回:

true if the specified region should be split.