org.apache.cassandra.utils.memory

Class MemtableAllocator

java.lang.Object

org.apache.cassandra.utils.memory.MemtableAllocator

Direct Known Subclasses:

MemtableBufferAllocator, NativeAllocator

public abstract class MemtableAllocator
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	MemtableAllocator.DataReclaimer
static class	MemtableAllocator.SubAllocator Mark the BB as unused, permitting it to be reclaimed

Field Summary

Fields

Modifier and Type	Field and Description
static MemtableAllocator.DataReclaimer	NO_OP

Method Summary

Methods

Modifier and Type	Method and Description
abstract Cell	clone(Cell cell, CFMetaData cfm, OpOrder.Group writeOp)
abstract CounterCell	clone(CounterCell cell, CFMetaData cfm, OpOrder.Group writeOp)
abstract DecoratedKey	clone(DecoratedKey key, OpOrder.Group opGroup)
abstract DeletedCell	clone(DeletedCell cell, CFMetaData cfm, OpOrder.Group writeOp)
abstract ExpiringCell	clone(ExpiringCell cell, CFMetaData cfm, OpOrder.Group writeOp)
boolean	isLive()
MemtableAllocator.SubAllocator	offHeap()
MemtableAllocator.SubAllocator	onHeap()
abstract MemtableAllocator.DataReclaimer	reclaimer()
void	setDiscarded() Indicate the memory and resources owned by this allocator are no longer referenced, and can be reclaimed/reused.
void	setDiscarding() Mark this allocator reclaiming; this will permit any outstanding allocations to temporarily overshoot the maximum memory limit so that flushing can begin immediately

Methods inherited from class java.lang.Object

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

Field Detail

NO_OP

public static final MemtableAllocator.DataReclaimer NO_OP

Method Detail

clone

public abstract Cell clone(Cell cell,
         CFMetaData cfm,
         OpOrder.Group writeOp)

clone

public abstract CounterCell clone(CounterCell cell,
                CFMetaData cfm,
                OpOrder.Group writeOp)

clone

public abstract DeletedCell clone(DeletedCell cell,
                CFMetaData cfm,
                OpOrder.Group writeOp)

clone

public abstract ExpiringCell clone(ExpiringCell cell,
                 CFMetaData cfm,
                 OpOrder.Group writeOp)

clone

public abstract DecoratedKey clone(DecoratedKey key,
                 OpOrder.Group opGroup)

reclaimer

public abstract MemtableAllocator.DataReclaimer reclaimer()

onHeap

public MemtableAllocator.SubAllocator onHeap()

offHeap

public MemtableAllocator.SubAllocator offHeap()

setDiscarding

public void setDiscarding()

Mark this allocator reclaiming; this will permit any outstanding allocations to temporarily overshoot the maximum memory limit so that flushing can begin immediately

setDiscarded

public void setDiscarded()

Indicate the memory and resources owned by this allocator are no longer referenced, and can be reclaimed/reused.

isLive

public boolean isLive()