org.apache.hadoop.streaming

Class Environment

java.lang.Object

java.util.Dictionary<K,V>

java.util.Hashtable<Object,Object>

java.util.Properties

org.apache.hadoop.streaming.Environment

All Implemented Interfaces:

Serializable, Cloneable, Map<Object,Object>

@InterfaceAudience.Private
public class Environment
extends Properties

This is a class used to get the current environment on the host machines running the map/reduce. This class assumes that setting the environment in streaming is allowed on windows/ix/linuz/freebsd/sunos/solaris/hp-ux

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.Properties

defaults

Constructor Summary

Constructors

Constructor and Description
Environment()

Method Summary

Modifier and Type	Method and Description
String	getHost()
Map<String,String>	toMap()

Methods inherited from class java.util.Properties

getProperty, getProperty, list, list, load, load, loadFromXML, propertyNames, save, setProperty, store, store, storeToXML, storeToXML, stringPropertyNames

Methods inherited from class java.util.Hashtable

clear, clone, compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keys, keySet, merge, put, putAll, putIfAbsent, rehash, remove, remove, replace, replace, replaceAll, size, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Environment

public Environment()
            throws IOException

Throws:

IOException

Method Detail

toMap

public Map<String,String> toMap()

getHost

public String getHost()