Package org.apache.hadoop.hdfs

Class HdfsConfiguration

java.lang.Object
org.apache.hadoop.conf.Configuration
org.apache.hadoop.hdfs.HdfsConfiguration
All Implemented Interfaces:
Iterable<Map.Entry<String,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(String[] args)
     

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

    addDefaultResource, addDeprecation, addDeprecation, addDeprecation, addDeprecation, addDeprecations, 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 Details

    • HdfsConfiguration

      public HdfsConfiguration()

    • HdfsConfiguration

      public HdfsConfiguration(boolean loadDefaults)

    • HdfsConfiguration

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

  • Method Details

    • 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(String[] args)