Package org.apache.hadoop.hdfs

Class HdfsConfiguration

java.lang.Object

org.apache.hadoop.conf.Configuration

org.apache.hadoop.hdfs.HdfsConfiguration

All Implemented Interfaces:

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

@Private
public class HdfsConfiguration
extends org.apache.hadoop.conf.Configuration

Adds deprecated keys into the configuration.

Nested Class Summary

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

org.apache.hadoop.conf.Configuration.DeprecationDelta, org.apache.hadoop.conf.Configuration.IntegerRanges

Constructor Summary

Constructors

Constructor	Description
HdfsConfiguration()
HdfsConfiguration(boolean loadDefaults)
HdfsConfiguration(org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method	Description
static void	init()	This method is here so that when invoked, HdfsConfiguration is class-loaded if it hasn't already been previously loaded.
static void	main(java.lang.String[] args)

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

addDefaultResource, addDefaultResource, addDeprecation, addDeprecation, addDeprecation, addDeprecation, addDeprecations, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addTags, clear, dumpConfiguration, dumpConfiguration, dumpDeprecatedKeys, get, get, getAllPropertiesByTag, getAllPropertiesByTags, getBoolean, getClass, getClass, getClassByName, getClassByNameOrNull, getClasses, getClassLoader, getConfResourceAsInputStream, getConfResourceAsReader, getDouble, getEnum, getEnumSet, getFile, getFinalParameters, getFloat, getInstances, getInt, getInts, getLocalPath, getLong, getLongBytes, getPassword, getPasswordFromConfig, getPasswordFromCredentialProviders, getPattern, getPropertySources, getProps, getPropsWithPrefix, getRange, getRaw, getResource, getSocketAddr, getSocketAddr, getStorageSize, getStorageSize, getStringCollection, getStrings, getStrings, getTimeDuration, getTimeDuration, getTimeDuration, getTimeDuration, getTimeDurationHelper, getTimeDurations, getTrimmed, getTrimmed, getTrimmedStringCollection, getTrimmedStrings, getTrimmedStrings, getValByRegex, hasWarnedDeprecation, isDeprecated, isPropertyTag, iterator, onlyKeyExists, readFields, reloadConfiguration, reloadExistingConfigurations, set, set, setAllowNullValueProperties, setBoolean, setBooleanIfUnset, setClass, setClassLoader, setDeprecatedProperties, setDouble, setEnum, setFloat, setIfUnset, setInt, setLong, setPattern, setQuietMode, setRestrictSystemProperties, setRestrictSystemPropertiesDefault, setRestrictSystemProps, setSocketAddr, setStorageSize, setStrings, setTimeDuration, size, substituteCommonVariables, toString, unset, updateConnectAddr, updateConnectAddr, write, writeXml, writeXml, writeXml, writeXml

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

HdfsConfiguration

public HdfsConfiguration()

HdfsConfiguration

public HdfsConfiguration(boolean loadDefaults)

HdfsConfiguration

public HdfsConfiguration(org.apache.hadoop.conf.Configuration conf)

Method Detail

init

public static void init()

This method is here so that when invoked, HdfsConfiguration is class-loaded if it hasn't already been previously loaded. Upon loading the class, the static initializer block above will be executed to add the deprecated keys and to add the default resources. It is safe for this method to be called multiple times as the static initializer block will only get invoked once. This replaces the previously, dangerous practice of other classes calling Configuration.addDefaultResource("hdfs-default.xml") directly without loading this class first, thereby skipping the key deprecation.

main

public static void main(java.lang.String[] args)