org.apache.hadoop.mapred
Class SequenceFileInputFormat

java.lang.Object
  org.apache.hadoop.mapred.FileInputFormat
      org.apache.hadoop.mapred.SequenceFileInputFormat

All Implemented Interfaces:

InputFormat

Direct Known Subclasses:

SequenceFileAsTextInputFormat, SequenceFileInputFilter

public class SequenceFileInputFormat
extends FileInputFormat

An InputFormat for SequenceFiles.

Field Summary

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

LOG

Constructor Summary

SequenceFileInputFormat()

Method Summary

RecordReader	getRecordReader(InputSplit split, JobConf job, Reporter reporter) Construct a RecordReader for a FileSplit.
protected Path[]	listPaths(JobConf job) List input directories.

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

getSplits, isSplitable, setMinSplitSize, validateInput

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

listPaths

protected Path[] listPaths(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:

listPaths in class FileInputFormat

Parameters:

job - the job to list input paths for

Returns:

array of Path objects

Throws:

IOException - if zero items.

getRecordReader

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

Description copied from interface: InputFormat

Construct a RecordReader for a FileSplit.

Specified by:

getRecordReader in interface InputFormat

Specified by:

getRecordReader in class FileInputFormat

Parameters:

split - the InputSplit

job - the job that this split belongs to

Returns:

a RecordReader

Throws:

IOException