org.apache.hadoop.mapred
Class SequenceFileInputFormat<K,V>

java.lang.Object
  extended by org.apache.hadoop.mapred.FileInputFormat<K,V>
      extended by org.apache.hadoop.mapred.SequenceFileInputFormat<K,V>
All Implemented Interfaces:
InputFormat<K,V>
Direct Known Subclasses:
SequenceFileAsBinaryInputFormat, SequenceFileAsTextInputFormat, SequenceFileInputFilter

@InterfaceAudience.Public
@InterfaceStability.Stable
public class SequenceFileInputFormat<K,V>
extends FileInputFormat<K,V>

An InputFormat for SequenceFiles.


Field Summary
 
Fields inherited from class org.apache.hadoop.mapred.FileInputFormat
INPUT_DIR_RECURSIVE, LOG, NUM_INPUT_FILES
 
Constructor Summary
SequenceFileInputFormat()
           
 
Method Summary
 RecordReader<K,V> getRecordReader(InputSplit split, JobConf job, Reporter reporter)
          Get the RecordReader for the given InputSplit.
protected  FileStatus[] listStatus(JobConf job)
          List input directories.
 
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

SequenceFileInputFormat

public SequenceFileInputFormat()
Method Detail

listStatus

protected FileStatus[] listStatus(JobConf job)
                           throws IOException
Description copied from class: FileInputFormat
List input directories. Subclasses may override to, e.g., select only files matching a regular expression.

Overrides:
listStatus in class FileInputFormat<K,V>
Parameters:
job - the job to list input paths for
Returns:
array of FileStatus objects
Throws:
IOException - if zero items.

getRecordReader

public RecordReader<K,V> 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<K,V>
Specified by:
getRecordReader in class FileInputFormat<K,V>
Parameters:
split - the InputSplit
job - the job that this split belongs to
Returns:
a RecordReader
Throws:
IOException


Copyright © 2013 Apache Software Foundation. All Rights Reserved.