Package org.apache.hadoop.mapred

Class MultiFileSplit

java.lang.Object

org.apache.hadoop.mapreduce.InputSplit

org.apache.hadoop.mapreduce.lib.input.CombineFileSplit

org.apache.hadoop.mapred.lib.CombineFileSplit

org.apache.hadoop.mapred.MultiFileSplit

All Implemented Interfaces:

Writable, InputSplit

@Public
@Stable
public class MultiFileSplit
extends CombineFileSplit

A sub-collection of input files. Unlike FileSplit, MultiFileSplit class does not represent a split of a file, but a split of input files into smaller sets. The atomic unit of split is a file.
MultiFileSplit can be used to implement RecordReader's, with reading one record per file.

See Also:

• FileSplit
• MultiFileInputFormat

Constructor Summary

Constructors

Constructor	Description
MultiFileSplit(JobConf job, Path[] files, long[] lengths)

Method Summary

Modifier and Type	Method	Description
String[]	getLocations()	Returns all the Paths where this input-split resides
String	toString()

Methods inherited from class org.apache.hadoop.mapred.lib.CombineFileSplit

getJob

Methods inherited from class org.apache.hadoop.mapreduce.lib.input.CombineFileSplit

getLength, getLength, getLengths, getNumPaths, getOffset, getPath, getPaths, getStartOffsets, readFields, write

Methods inherited from class org.apache.hadoop.mapreduce.InputSplit

getLocationInfo

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.mapred.InputSplit

getLength

Methods inherited from interface org.apache.hadoop.io.Writable

readFields, write

Constructor Details

MultiFileSplit

public MultiFileSplit(JobConf job,
 Path[] files,
 long[] lengths)

Method Details

getLocations

public String[] getLocations()
                      throws IOException

Description copied from class: CombineFileSplit

Returns all the Paths where this input-split resides

Specified by:

getLocations in interface InputSplit

Overrides:

getLocations in class CombineFileSplit

Returns:

a new array of the node nodes.

Throws:

IOException

toString

public String toString()

Overrides:

toString in class CombineFileSplit