org.apache.cassandra.db

Class Memtable

java.lang.Object

org.apache.cassandra.db.Memtable

public class Memtable
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
ColumnFamilyStore	cfs
AbstractType	initialComparator

Constructor Summary

Constructors

Constructor and Description
Memtable(ColumnFamilyStore cfs)

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	contents()
long	creationTime()
void	flushAndSignal(java.util.concurrent.CountDownLatch latch, java.util.concurrent.Future<ReplayPosition> context)
ColumnFamily	getColumnFamily(DecoratedKey key)
java.util.Iterator<java.util.Map.Entry<DecoratedKey,AtomicSortedColumns>>	getEntryIterator(RowPosition startWith, RowPosition stopAt)
long	getLiveSize()
long	getOperations()
boolean	isClean()
boolean	isExpired()
void	maybeUpdateLiveRatio()
java.lang.String	toString()
void	updateLiveRatio()

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 AbstractType initialComparator

Constructor Detail

Memtable

public Memtable(ColumnFamilyStore cfs)

Method Detail

getLiveSize

public long getLiveSize()

getOperations

public long getOperations()

maybeUpdateLiveRatio

public void maybeUpdateLiveRatio()

updateLiveRatio

public void updateLiveRatio()
                     throws java.lang.RuntimeException

Throws:

java.lang.RuntimeException

contents

public java.lang.String contents()

flushAndSignal

public void flushAndSignal(java.util.concurrent.CountDownLatch latch,
                  java.util.concurrent.Future<ReplayPosition> context)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getEntryIterator

public java.util.Iterator<java.util.Map.Entry<DecoratedKey,AtomicSortedColumns>> 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

isClean

public boolean isClean()

isExpired

public boolean isExpired()

Returns:

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

getColumnFamily

public ColumnFamily getColumnFamily(DecoratedKey key)

creationTime

public long creationTime()