org.apache.nutch.mapReduce
Class FileSplit

java.lang.Object
  org.apache.nutch.mapReduce.FileSplit

All Implemented Interfaces:

Writable

public class FileSplit

extends Object

implements Writable

A section of an input file. Returned by InputFormat.getSplits(NutchFileSystem, JobConf, int) and passed to InputFormat.getRecordReader(NutchFileSystem, FileSplit, JobConf).

Constructor Summary

FileSplit(File file, long start, long length)
Constructs a split.

Method Summary

File	getFile() The file containing this split's data.
long	getLength() The number of bytes in the file to process.
long	getStart() The position of the first byte in the file to process.
void	readFields(DataInput in) Reads the fields of this object from in.
void	write(DataOutput out) Writes the fields of this object to out.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileSplit

public FileSplit(File file,
                 long start,
                 long length)

Constructs a split.

Parameters:

file - the file name

start - the position of the first byte in the file to process

length - the number of bytes in the file to process

Method Detail

getFile

public File getFile()

The file containing this split's data.

getStart

public long getStart()

The position of the first byte in the file to process.

getLength

public long getLength()

The number of bytes in the file to process.

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Writes the fields of this object to out.

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Reads the fields of this object from in. For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Throws:

IOException