org.apache.hadoop.hbase

Class HBaseConfiguration

java.lang.Object

org.apache.hadoop.conf.Configuration

org.apache.hadoop.hbase.HBaseConfiguration

All Implemented Interfaces:

Iterable<Map.Entry<String,String>>, org.apache.hadoop.io.Writable

@InterfaceAudience.Public
@InterfaceStability.Stable
public class HBaseConfiguration
extends org.apache.hadoop.conf.Configuration

Adds HBase configuration files to a Configuration

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.conf.Configuration

org.apache.hadoop.conf.Configuration.IntegerRanges

Constructor Summary

Constructors

Constructor and Description
HBaseConfiguration() Deprecated.
HBaseConfiguration(org.apache.hadoop.conf.Configuration c) Deprecated.

Method Summary

Methods

Modifier and Type	Method and Description
static org.apache.hadoop.conf.Configuration	addHbaseResources(org.apache.hadoop.conf.Configuration conf)
static org.apache.hadoop.conf.Configuration	create() Creates a Configuration with HBase resources
static org.apache.hadoop.conf.Configuration	create(org.apache.hadoop.conf.Configuration that)
static int	getInt(org.apache.hadoop.conf.Configuration conf, String name, String deprecatedName, int defaultValue) Get the value of the name property as an int, possibly referring to the deprecated name of the configuration property.
static String	getPassword(org.apache.hadoop.conf.Configuration conf, String alias, String defPass) Get the password from the Configuration instance using the getPassword method if it exists.
static boolean	isShowConfInServlet()
static void	main(String[] args) For debugging.
static void	merge(org.apache.hadoop.conf.Configuration destConf, org.apache.hadoop.conf.Configuration srcConf) Merge two configurations.

Methods inherited from class org.apache.hadoop.conf.Configuration

addDefaultResource, addResource, addResource, addResource, addResource, clear, dumpConfiguration, get, get, getBoolean, getClass, getClass, getClassByName, getClasses, getClassLoader, getConfResourceAsInputStream, getConfResourceAsReader, getEnum, getFile, getFloat, getInstances, getInt, getLocalPath, getLong, getRange, getRaw, getResource, getStringCollection, getStrings, getStrings, getValByRegex, iterator, readFields, reloadConfiguration, set, setBoolean, setBooleanIfUnset, setClass, setClassLoader, setEnum, setFloat, setIfUnset, setInt, setLong, setQuietMode, setStrings, size, toString, unset, write, writeXml, writeXml

Methods inherited from class java.lang.Object

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

Constructor Detail

HBaseConfiguration

@Deprecated
public HBaseConfiguration()

Deprecated.

Instantinating HBaseConfiguration() is deprecated. Please use HBaseConfiguration#create() to construct a plain Configuration

HBaseConfiguration

@Deprecated
public HBaseConfiguration(org.apache.hadoop.conf.Configuration c)

Deprecated.

Instantiating HBaseConfiguration() is deprecated. Please use HBaseConfiguration#create(conf) to construct a plain Configuration

Method Detail

addHbaseResources

public static org.apache.hadoop.conf.Configuration addHbaseResources(org.apache.hadoop.conf.Configuration conf)

create

public static org.apache.hadoop.conf.Configuration create()

Creates a Configuration with HBase resources

Returns:

a Configuration with HBase resources

create

public static org.apache.hadoop.conf.Configuration create(org.apache.hadoop.conf.Configuration that)

Parameters:

that - Configuration to clone.

Returns:

a Configuration created with the hbase-*.xml files plus the given configuration.

merge

public static void merge(org.apache.hadoop.conf.Configuration destConf,
         org.apache.hadoop.conf.Configuration srcConf)

Merge two configurations.

Parameters:

destConf - the configuration that will be overwritten with items from the srcConf

srcConf - the source configuration

isShowConfInServlet

public static boolean isShowConfInServlet()

Returns:

whether to show HBase Configuration in servlet

getInt

public static int getInt(org.apache.hadoop.conf.Configuration conf,
         String name,
         String deprecatedName,
         int defaultValue)

Get the value of the name property as an int, possibly referring to the deprecated name of the configuration property. If no such property exists, the provided default value is returned, or if the specified value is not a valid int, then an error is thrown.

Parameters:

name - property name.

deprecatedName - a deprecatedName for the property to use if non-deprecated name is not used

defaultValue - default value.

Returns:

property value as an int, or defaultValue.

Throws:

NumberFormatException - when the value is invalid

getPassword

public static String getPassword(org.apache.hadoop.conf.Configuration conf,
                 String alias,
                 String defPass)
                          throws IOException

Get the password from the Configuration instance using the getPassword method if it exists. If not, then fall back to the general get method for configuration elements.

Parameters:

conf - configuration instance for accessing the passwords

alias - the name of the password element

defPass - the default password

Returns:

String password or default password

Throws:

IOException

main

public static void main(String[] args)
                 throws Exception

For debugging. Dump configurations to system output as xml format. Master and RS configurations can also be dumped using http services. e.g. "curl http://master:60010/dump"

Throws:

Exception