Package org.apache.hadoop.streaming.io

Class TypedBytesOutputReader

java.lang.Object

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

org.apache.hadoop.streaming.io.TypedBytesOutputReader

public class TypedBytesOutputReader
extends OutputReader<TypedBytesWritable,TypedBytesWritable>

OutputReader that reads the client's output as typed bytes.

Constructor Summary

Constructors

Constructor	Description
TypedBytesOutputReader()

Method Summary

Modifier and Type	Method	Description
TypedBytesWritable	getCurrentKey()	Returns the current key.
TypedBytesWritable	getCurrentValue()	Returns the current value.
java.lang.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

TypedBytesOutputReader

public TypedBytesOutputReader()

Method Detail

initialize

public void initialize(PipeMapRed pipeMapRed)
                throws java.io.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<TypedBytesWritable,TypedBytesWritable>

Throws:

java.io.IOException

readKeyValue

public boolean readKeyValue()
                     throws java.io.IOException

Description copied from class: OutputReader

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

Specified by:

readKeyValue in class OutputReader<TypedBytesWritable,TypedBytesWritable>

Returns:

true iff a key/value pair was read

Throws:

java.io.IOException

getCurrentKey

public TypedBytesWritable getCurrentKey()
                                 throws java.io.IOException

Description copied from class: OutputReader

Returns the current key.

Specified by:

getCurrentKey in class OutputReader<TypedBytesWritable,TypedBytesWritable>

Throws:

java.io.IOException

getCurrentValue

public TypedBytesWritable getCurrentValue()
                                   throws java.io.IOException

Description copied from class: OutputReader

Returns the current value.

Specified by:

getCurrentValue in class OutputReader<TypedBytesWritable,TypedBytesWritable>

Throws:

java.io.IOException

getLastOutput

public java.lang.String getLastOutput()

Description copied from class: OutputReader

Returns the last output from the client as a String.

Specified by:

getLastOutput in class OutputReader<TypedBytesWritable,TypedBytesWritable>