Package com.sleepycat.db

Class ReplicationConfig

java.lang.Object

com.sleepycat.db.ReplicationConfig

All Implemented Interfaces:

Cloneable

public final class ReplicationConfig
extends Object
implements Cloneable

Settings that configure Berkeley DB replication. Used in the Environment.setReplicationConfig(com.sleepycat.db.ReplicationConfig, boolean) method.

Field Summary

Fields

Modifier and Type	Field	Description
static final ReplicationConfig	AUTOINIT	The replication master should automatically re-initialize outdated clients (defaults to on.)
static final ReplicationConfig	BULK	The replication master should send groups of records to the clients in a single network transfer.
static final ReplicationConfig	DELAYCLIENT	The client should delay synchronizing to a newly declared master (defaults to off).
static final ReplicationConfig	ELECTIONS	Replication Manager automatically runs elections to choose a new master when the old master appears to have become disconnected.
static final ReplicationConfig	LEASE	Master leases will be used for this site.
static final ReplicationConfig	NOWAIT	Berkeley DB method calls that would normally block while clients are in recovery should return errors immediately.
static final ReplicationConfig	STRICT_2SITE	Replication Manager observes the strict "majority" rule in managing elections, even in a group with only 2 sites.

Method Summary

Modifier and Type	Method	Description
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

BULK

public static final ReplicationConfig BULK

The replication master should send groups of records to the clients in a single network transfer.

DELAYCLIENT

public static final ReplicationConfig DELAYCLIENT

The client should delay synchronizing to a newly declared master (defaults to off). Clients configured in this way will remain unsynchronized until the application calls the Environment.syncReplication() method.

AUTOINIT

public static final ReplicationConfig AUTOINIT

The replication master should automatically re-initialize outdated clients (defaults to on.)

NOWAIT

public static final ReplicationConfig NOWAIT

Berkeley DB method calls that would normally block while clients are in recovery should return errors immediately.

STRICT_2SITE

public static final ReplicationConfig STRICT_2SITE

Replication Manager observes the strict "majority" rule in managing elections, even in a group with only 2 sites. This means the client in a 2-site group will be unable to take over as master if the original master fails or becomes disconnected. (See the Elections section in the Berkeley DB Reference Guide for more information.) Both sites in the replication group should have the same value for this parameter.

ELECTIONS

public static final ReplicationConfig ELECTIONS

Replication Manager automatically runs elections to choose a new master when the old master appears to have become disconnected. This option is turned on by default.

LEASE

public static final ReplicationConfig LEASE

Master leases will be used for this site.

Configuring this option may result in the Database.get() and Cursor.get*() methods throwing a DatabaseException when attempting to read entries from a database after the site's master lease has expired.

Once this option is turned on, it may never be turned off.

Method Details

toString

public String toString()

Overrides:

toString in class Object