org.apache.mahout.text

Class MultipleTextFileInputFormat

java.lang.Object

org.apache.hadoop.mapreduce.InputFormat<K,V>

org.apache.hadoop.mapreduce.lib.input.FileInputFormat<K,V>

org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.BytesWritable>

org.apache.mahout.text.MultipleTextFileInputFormat

public class MultipleTextFileInputFormat
extends org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.BytesWritable>

Used in combining a large number of text files into one text input reader along with the WholeFileRecordReader class.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.lib.input.FileInputFormat

org.apache.hadoop.mapreduce.lib.input.FileInputFormat.Counter

Field Summary

Fields inherited from class org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat

SPLIT_MINSIZE_PERNODE, SPLIT_MINSIZE_PERRACK

Constructor Summary

Constructors

Constructor and Description
MultipleTextFileInputFormat()

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.BytesWritable>	createRecordReader(org.apache.hadoop.mapreduce.InputSplit inputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext taskAttemptContext)

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

createPool, createPool, getFileBlockLocations, getSplits, isSplitable, setMaxSplitSize, setMinSplitSizeNode, setMinSplitSizeRack

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

addInputPath, addInputPaths, computeSplitSize, getBlockIndex, getFormatMinSplitSize, getInputPathFilter, getInputPaths, getMaxSplitSize, getMinSplitSize, listStatus, setInputPathFilter, setInputPaths, setInputPaths, setMaxInputSplitSize, setMinInputSplitSize

Methods inherited from class java.lang.Object

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

Constructor Detail

MultipleTextFileInputFormat

public MultipleTextFileInputFormat()

Method Detail

createRecordReader

public org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.BytesWritable> createRecordReader(org.apache.hadoop.mapreduce.InputSplit inputSplit,
                                                                                                                               org.apache.hadoop.mapreduce.TaskAttemptContext taskAttemptContext)
                                                                                                                                 throws IOException

Specified by:

createRecordReader in class org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat<org.apache.hadoop.io.IntWritable,org.apache.hadoop.io.BytesWritable>

Throws:

IOException