org.apache.hadoop.streaming.io

Class InputWriter<K,V>

java.lang.Object

org.apache.hadoop.streaming.io.InputWriter<K,V>

Direct Known Subclasses:

RawBytesInputWriter, TextInputWriter, TypedBytesInputWriter

public abstract class InputWriter<K,V>
extends java.lang.Object

Abstract base for classes that write the client's input.

Constructor Summary

Constructors

Constructor and Description
InputWriter()

Method Summary

Methods

Modifier and Type	Method and Description
void	initialize(PipeMapRed pipeMapRed) Initializes the InputWriter.
abstract void	writeKey(K key) Writes an input key.
abstract void	writeValue(V value) Writes an input value.

Methods inherited from class java.lang.Object

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

Constructor Detail

InputWriter

public InputWriter()

Method Detail

initialize

public void initialize(PipeMapRed pipeMapRed)
                throws java.io.IOException

Initializes the InputWriter. This method has to be called before calling any of the other methods.

Throws:

java.io.IOException

writeKey

public abstract void writeKey(K key)
                       throws java.io.IOException

Writes an input key.

Throws:

java.io.IOException

writeValue

public abstract void writeValue(V value)
                         throws java.io.IOException

Writes an input value.

Throws:

java.io.IOException