Package org.apache.hadoop.hbase.wal

Class NamespaceGroupingStrategy

java.lang.Object

org.apache.hadoop.hbase.wal.NamespaceGroupingStrategy

All Implemented Interfaces:

RegionGroupingProvider.RegionGroupingStrategy

@Private
public class NamespaceGroupingStrategy
extends Object
implements RegionGroupingProvider.RegionGroupingStrategy

A WAL grouping strategy based on namespace. Notice: the wal-group mapping might change if we support dynamic namespace updating later, and special attention needed if we support feature like group-based replication.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) String	providerId

Fields inherited from interface org.apache.hadoop.hbase.wal.RegionGroupingProvider.RegionGroupingStrategy

GROUP_NAME_DELIMITER

Constructor Summary

Constructors

Constructor	Description
NamespaceGroupingStrategy()

Method Summary

Modifier and Type	Method	Description
String	group(byte[] identifier, byte[] namespace)	Given an identifier and a namespace, pick a group.
void	init(org.apache.hadoop.conf.Configuration config, String providerId)

Methods inherited from class java.lang.Object

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

Field Details

providerId

String providerId

Constructor Details

NamespaceGroupingStrategy

public NamespaceGroupingStrategy()

Method Details

group

public String group(byte[] identifier,
 byte[] namespace)

Description copied from interface: RegionGroupingProvider.RegionGroupingStrategy

Given an identifier and a namespace, pick a group.

Specified by:

group in interface RegionGroupingProvider.RegionGroupingStrategy

init

public void init(org.apache.hadoop.conf.Configuration config,
 String providerId)

Specified by:

init in interface RegionGroupingProvider.RegionGroupingStrategy