Package org.opends.server.discovery

Class Partition

java.lang.Object

org.opends.server.discovery.Partition

public final class Partition
extends Object

Named set of servers defining a distributed service. A distribution load balancer expects data to be split up into shards referred to as "partitions", each partition exposing the same set of naming contexts, but only a sub-set of the data. For example, a distribution might have two partitions, the first containing all users whose name begins with A-M, and the second containing all users whose name begins with N-Z. Both partitions have the same naming contexts, e.g:

dc=example,dc=com

unsharded parent naming context replicated across all servers.
Contains data common to all partitions, such as ACIs, groups, etc.

ou=people,dc=example,dc=com *

sharded naming context whose content (the users) is split up according to some function, e.g. consistent hashing.

See Also:

ServiceDiscoveryMechanism.getPartitions(Collection)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Partition.Server	A server from a partition.

Method Summary

Modifier and Type	Method	Description
String	getPartitionId()	Returns the ID for the partition.
Set<Partition.Server>	getPrimaryServers()	Returns the set of primary server to use.
Set<Partition.Server>	getSecondaryServers()	Returns the set of fallback servers to use.

Methods inherited from class java.lang.Object

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

Method Detail

getPrimaryServers

public Set<Partition.Server> getPrimaryServers()

Returns the set of primary server to use.

Returns:

the set of primary server to use.

getSecondaryServers

public Set<Partition.Server> getSecondaryServers()

Returns the set of fallback servers to use.

Returns:

the set of fallback servers to use

getPartitionId

public String getPartitionId()

Returns the ID for the partition.

Returns:

the ID for the partition