org.apache.hadoop.mapred
Class SequenceFileAsBinaryInputFormat

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

public class SequenceFileAsBinaryInputFormat
extends SequenceFileInputFormat<BytesWritable,BytesWritable>

InputFormat reading keys, values from SequenceFiles in binary (raw) format.


Nested Class Summary
static class SequenceFileAsBinaryInputFormat.SequenceFileAsBinaryRecordReader
          Read records from a SequenceFile as binary (raw) bytes.
 
Nested classes/interfaces inherited from class org.apache.hadoop.mapred.FileInputFormat
FileInputFormat.Counter
 
Field Summary
 
Fields inherited from class org.apache.hadoop.mapred.FileInputFormat
LOG
 
Constructor Summary
SequenceFileAsBinaryInputFormat()
           
 
Method Summary
 RecordReader<BytesWritable,BytesWritable> 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, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplitHosts, getSplits, isSplitable, setInputPathFilter, setInputPaths, setInputPaths, setMinSplitSize
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SequenceFileAsBinaryInputFormat

public SequenceFileAsBinaryInputFormat()
Method Detail

getRecordReader

public RecordReader<BytesWritable,BytesWritable> 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<BytesWritable,BytesWritable>
Overrides:
getRecordReader in class SequenceFileInputFormat<BytesWritable,BytesWritable>
Parameters:
split - the InputSplit
job - the job that this split belongs to
Returns:
a RecordReader
Throws:
IOException


Copyright © 2009 The Apache Software Foundation