org.apache.hadoop.mapred
Class SequenceFileAsTextInputFormat

java.lang.Object
  extended by org.apache.hadoop.mapred.FileInputFormat<K,V>
      extended by org.apache.hadoop.mapred.SequenceFileInputFormat<Text,Text>
          extended by org.apache.hadoop.mapred.SequenceFileAsTextInputFormat
All Implemented Interfaces:
InputFormat<Text,Text>

@InterfaceAudience.Public
@InterfaceStability.Stable
public class SequenceFileAsTextInputFormat
extends SequenceFileInputFormat<Text,Text>

This class is similar to SequenceFileInputFormat, except it generates SequenceFileAsTextRecordReader which converts the input keys and values to their String forms by calling toString() method.


Field Summary
 
Fields inherited from class org.apache.hadoop.mapred.FileInputFormat
LOG, NUM_INPUT_FILES
 
Constructor Summary
SequenceFileAsTextInputFormat()
           
 
Method Summary
 RecordReader<Text,Text> getRecordReader(InputSplit split, JobConf job, Reporter reporter)
          Get the RecordReader for the given InputSplit.
 
Methods inherited from class org.apache.hadoop.mapred.SequenceFileInputFormat
listStatus
 
Methods inherited from class org.apache.hadoop.mapred.FileInputFormat
addInputPath, addInputPathRecursively, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplitHosts, getSplits, isSplitable, makeSplit, setInputPathFilter, setInputPaths, setInputPaths, setMinSplitSize
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SequenceFileAsTextInputFormat

public SequenceFileAsTextInputFormat()
Method Detail

getRecordReader

public RecordReader<Text,Text> getRecordReader(InputSplit split,
                                               JobConf job,
                                               Reporter reporter)
                                        throws IOException
Description copied from interface: InputFormat
Get the RecordReader for the given InputSplit.

It is the responsibility of the RecordReader to respect record boundaries while processing the logical split to present a record-oriented view to the individual task.

Specified by:
getRecordReader in interface InputFormat<Text,Text>
Overrides:
getRecordReader in class SequenceFileInputFormat<Text,Text>
Parameters:
split - the InputSplit
job - the job that this split belongs to
Returns:
a RecordReader
Throws:
IOException


Copyright © 2012 Apache Software Foundation. All Rights Reserved.