org.apache.cassandra.utils.memory

Class MemtablePool.SubPool

java.lang.Object

org.apache.cassandra.utils.memory.MemtablePool.SubPool

Enclosing class:

MemtablePool

public class MemtablePool.SubPool
extends java.lang.Object

Note the difference between acquire() and allocate(); allocate() makes more resources available to all owners, and acquire() makes shared resources unavailable but still recorded. An Owner must always acquire resources, but only needs to allocate if there are none already available. This distinction is not always meaningful.

Field Summary

Fields

Modifier and Type	Field and Description
float	cleanThreshold
long	limit

Constructor Summary

Constructors

Constructor and Description
SubPool(long limit, float cleanThreshold)

Method Summary

Modifier and Type	Method and Description
WaitQueue	hasRoom()
MemtableAllocator.SubAllocator	newAllocator()
float	reclaimingRatio()
long	used()
float	usedRatio()

Methods inherited from class java.lang.Object

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

Field Detail

limit

public final long limit

cleanThreshold

public final float cleanThreshold

Constructor Detail

SubPool

public SubPool(long limit,
               float cleanThreshold)

Method Detail

used

public long used()

reclaimingRatio

public float reclaimingRatio()

usedRatio

public float usedRatio()

newAllocator

public MemtableAllocator.SubAllocator newAllocator()

hasRoom

public WaitQueue hasRoom()