Package org.apache.cassandra.db.memtable

Class SkipListMemtableFactory

java.lang.Object

org.apache.cassandra.db.memtable.SkipListMemtableFactory

All Implemented Interfaces:

Memtable.Factory

public class SkipListMemtableFactory
extends Object
implements Memtable.Factory

This class makes better sense as an inner class to SkipListMemtable (which could be as simple as FACTORY = SkipListMemtable::new), but having it there causes the SkipListMemtable class to be initialized the first time it is referenced (e.g. during default memtable factory construction). Some tests want to setup table parameters before initializing DatabaseDescriptor -- this allows them to do so, and also makes sure the memtable memory pools are not created for offline tools.

Field Summary

Fields

Modifier and Type	Field	Description
static InheritingClass	CONFIGURATION
static final SkipListMemtableFactory	INSTANCE

Constructor Summary

Constructors

Constructor	Description
SkipListMemtableFactory()

Method Summary

Modifier and Type	Method	Description
Memtable	create(AtomicReference<CommitLogPosition> commitLogLowerBound, TableMetadataRef metadaRef, Memtable.Owner owner)	Create a memtable.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.db.memtable.Memtable.Factory

createMemtableMetrics, streamFromMemtable, streamToMemtable, writesAreDurable, writesShouldSkipCommitLog

Field Details

INSTANCE

public static final SkipListMemtableFactory INSTANCE

CONFIGURATION

public static InheritingClass CONFIGURATION

Constructor Details

SkipListMemtableFactory

public SkipListMemtableFactory()

Method Details

create

public Memtable create(AtomicReference<CommitLogPosition> commitLogLowerBound,
 TableMetadataRef metadaRef,
 Memtable.Owner owner)

Description copied from interface: Memtable.Factory

Create a memtable.

Specified by:

create in interface Memtable.Factory

Parameters:

commitLogLowerBound - A commit log lower bound for the new memtable. This will be equal to the previous memtable's upper bound and defines the span of positions that any flushed sstable will cover.

metadaRef - Pointer to the up-to-date table metadata.

owner - Owning objects that will receive flush requests triggered by the memtable (e.g. on expiration).