org.apache.cassandra.db

Class Memtable

java.lang.Object

org.apache.cassandra.db.Memtable

All Implemented Interfaces:

java.lang.Comparable<Memtable>

public class Memtable
extends java.lang.Object
implements java.lang.Comparable<Memtable>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Memtable.LastReplayPosition

Field Summary

Fields

Modifier and Type	Field and Description
ColumnFamilyStore	cfs
CellNameType	initialComparator

Constructor Summary

Constructors

Constructor and Description
Memtable(CFMetaData metadata)
Memtable(ColumnFamilyStore cfs)

Method Summary

Modifier and Type	Method and Description
boolean	accepts(OpOrder.Group opGroup, ReplayPosition replayPosition)
int	compareTo(Memtable that)
java.lang.String	contents()
long	creationTime()
org.apache.cassandra.db.Memtable.FlushRunnable	flushRunnable()
MemtableAllocator	getAllocator()
ColumnFamily	getColumnFamily(DecoratedKey key)
java.util.Iterator<java.util.Map.Entry<DecoratedKey,ColumnFamily>>	getEntryIterator(RowPosition startWith, RowPosition stopAt)
long	getLiveDataSize()
long	getOperations()
boolean	isClean()
boolean	isCleanAfter(ReplayPosition position)
boolean	isExpired()
boolean	isLive()
int	partitionCount()
void	setDiscarding(OpOrder.Barrier writeBarrier, java.util.concurrent.atomic.AtomicReference<ReplayPosition> lastReplayPosition)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

cfs

public final ColumnFamilyStore cfs

initialComparator

public final CellNameType initialComparator

Constructor Detail

Memtable

public Memtable(ColumnFamilyStore cfs)

Memtable

public Memtable(CFMetaData metadata)

Method Detail

compareTo

public int compareTo(Memtable that)

Specified by:

compareTo in interface java.lang.Comparable<Memtable>

getAllocator

public MemtableAllocator getAllocator()

getLiveDataSize

public long getLiveDataSize()

getOperations

public long getOperations()

setDiscarding

public void setDiscarding(OpOrder.Barrier writeBarrier,
                          java.util.concurrent.atomic.AtomicReference<ReplayPosition> lastReplayPosition)

accepts

public boolean accepts(OpOrder.Group opGroup,
                       ReplayPosition replayPosition)

isLive

public boolean isLive()

isClean

public boolean isClean()

isCleanAfter

public boolean isCleanAfter(ReplayPosition position)

isExpired

public boolean isExpired()

Returns:

true if this memtable is expired. Expiration time is determined by CF's memtable_flush_period_in_ms.

contents

public java.lang.String contents()

partitionCount

public int partitionCount()

flushRunnable

public org.apache.cassandra.db.Memtable.FlushRunnable flushRunnable()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getEntryIterator

public java.util.Iterator<java.util.Map.Entry<DecoratedKey,ColumnFamily>> getEntryIterator(RowPosition startWith,
                                                                                           RowPosition stopAt)

Parameters:

startWith - Include data in the result from and including this key and to the end of the memtable

Returns:

An iterator of entries with the data from the start key

getColumnFamily

public ColumnFamily getColumnFamily(DecoratedKey key)

creationTime

public long creationTime()