org.apache.hadoop.hbase.regionserver

Class FlushNonSloppyStoresFirstPolicy

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hbase.regionserver.FlushPolicy

org.apache.hadoop.hbase.regionserver.FlushLargeStoresPolicy

org.apache.hadoop.hbase.regionserver.FlushNonSloppyStoresFirstPolicy

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable

@InterfaceAudience.LimitedPrivate(value="Configuration")
public class FlushNonSloppyStoresFirstPolicy
extends FlushLargeStoresPolicy

A FlushPolicy that only flushes store larger than a given threshold. If no store is large enough, then all stores will be flushed. Gives priority to selecting regular stores first, and only if no other option, selects sloppy stores which normaly require more memory.

Field Summary

Fields

Modifier and Type	Field and Description
private Collection<HStore>	regularStores
private Collection<HStore>	sloppyStores

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

DEFAULT_HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND_MIN, flushSizeLowerBound, HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND, HREGION_COLUMNFAMILY_FLUSH_SIZE_LOWER_BOUND_MIN

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

region

Constructor Summary

Constructors

Constructor and Description
FlushNonSloppyStoresFirstPolicy()

Method Summary

Modifier and Type	Method and Description
protected void	configureForRegion(HRegion region) Upon construction, this method will be called with the region to be governed.
Collection<HStore>	selectStoresToFlush()

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

setFlushSizeLowerBounds, shouldFlush

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

Field Detail

regularStores

private Collection<HStore> regularStores

sloppyStores

private Collection<HStore> sloppyStores

Constructor Detail

FlushNonSloppyStoresFirstPolicy

public FlushNonSloppyStoresFirstPolicy()

Method Detail

selectStoresToFlush

public Collection<HStore> selectStoresToFlush()

Specified by:

selectStoresToFlush in class FlushPolicy

Returns:

the stores need to be flushed.

configureForRegion

protected void configureForRegion(HRegion region)

Description copied from class: FlushPolicy

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 FlushPolicy