Package org.apache.hadoop.mapreduce

Class MarkableIterator<VALUE>

java.lang.Object

org.apache.hadoop.mapreduce.MarkableIterator<VALUE>

All Implemented Interfaces:

Iterator<VALUE>

@Public
@Evolving
public class MarkableIterator<VALUE>
extends Object

MarkableIterator is a wrapper iterator class that implements the MarkableIteratorInterface.

Constructor Summary

Constructors

Constructor	Description
MarkableIterator(Iterator<VALUE> itr)	Create a new iterator layered on the input iterator

Method Summary

Modifier and Type	Method	Description
void	clearMark()
boolean	hasNext()
void	mark()
VALUE	next()
void	remove()
void	reset()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Details

MarkableIterator

public MarkableIterator(Iterator<VALUE> itr)

Create a new iterator layered on the input iterator

Parameters:

itr - underlying iterator that implements MarkableIteratorInterface

Method Details

mark

public void mark()
          throws IOException

Throws:

IOException

reset

public void reset()
           throws IOException

Throws:

IOException

clearMark

public void clearMark()
               throws IOException

Throws:

IOException

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<VALUE>

next

public VALUE next()

Specified by:

next in interface Iterator<VALUE>

remove

public void remove()

Specified by:

remove in interface Iterator<VALUE>