org.apache.hadoop.mapred
Class KeyValueTextInputFormat

java.lang.Object
  org.apache.hadoop.mapred.FileInputFormat
      org.apache.hadoop.mapred.TextInputFormat
          org.apache.hadoop.mapred.KeyValueTextInputFormat

All Implemented Interfaces:

InputFormat, JobConfigurable

Direct Known Subclasses:

StreamInputFormat

public class KeyValueTextInputFormat
extends TextInputFormat

An InputFormat for plain text files. Files are broken into lines. Either linefeed or carriage-return are used to signal end of line. Each line is divided into key and value parts by a separator byte. If no such a byte exists, the key will be the entire line and value will be empty.

Field Summary

Fields inherited from class org.apache.hadoop.mapred.FileInputFormat

LOG

Constructor Summary

KeyValueTextInputFormat()

Method Summary

RecordReader

getRecordReader(InputSplit genericSplit, JobConf job, Reporter reporter) Construct a RecordReader for a FileSplit.

Methods inherited from class org.apache.hadoop.mapred.TextInputFormat

configure, isSplitable

Methods inherited from class org.apache.hadoop.mapred.FileInputFormat

getSplits, listPaths, setMinSplitSize, validateInput

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyValueTextInputFormat

public KeyValueTextInputFormat()

Method Detail

getRecordReader

public RecordReader getRecordReader(InputSplit genericSplit,
                                    JobConf job,
                                    Reporter reporter)
                             throws IOException

Description copied from interface: InputFormat

Construct a RecordReader for a FileSplit.

Specified by:

getRecordReader in interface InputFormat

Overrides:

getRecordReader in class TextInputFormat

Parameters:

genericSplit - the InputSplit

job - the job that this split belongs to

Returns:

a RecordReader

Throws:

IOException