org.apache.hadoop.streaming.io

Class TextOutputReader

java.lang.Object

org.apache.hadoop.streaming.io.OutputReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

org.apache.hadoop.streaming.io.TextOutputReader

public class TextOutputReader
extends OutputReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

OutputReader that reads the client's output as text.

Constructor Summary

Constructors

Constructor and Description
TextOutputReader()

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.hadoop.io.Text	getCurrentKey() Returns the current key.
org.apache.hadoop.io.Text	getCurrentValue() Returns the current value.
String	getLastOutput() Returns the last output from the client as a String.
void	initialize(PipeMapRed pipeMapRed) Initializes the OutputReader.
boolean	readKeyValue() Read the next key/value pair outputted by the client.

Methods inherited from class java.lang.Object

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

Constructor Detail

TextOutputReader

public TextOutputReader()

Method Detail

initialize

public void initialize(PipeMapRed pipeMapRed)
                throws IOException

Description copied from class: OutputReader

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

Overrides:

initialize in class OutputReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Throws:

IOException

readKeyValue

public boolean readKeyValue()
                     throws IOException

Description copied from class: OutputReader

Read the next key/value pair outputted by the client.

Specified by:

readKeyValue in class OutputReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Returns:

true iff a key/value pair was read

Throws:

IOException

getCurrentKey

public org.apache.hadoop.io.Text getCurrentKey()
                                        throws IOException

Description copied from class: OutputReader

Returns the current key.

Specified by:

getCurrentKey in class OutputReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Throws:

IOException

getCurrentValue

public org.apache.hadoop.io.Text getCurrentValue()
                                          throws IOException

Description copied from class: OutputReader

Returns the current value.

Specified by:

getCurrentValue in class OutputReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>

Throws:

IOException

getLastOutput

public String getLastOutput()

Description copied from class: OutputReader

Returns the last output from the client as a String.

Specified by:

getLastOutput in class OutputReader<org.apache.hadoop.io.Text,org.apache.hadoop.io.Text>