org.apache.hadoop.mapred

Class SequenceFileAsBinaryInputFormat

java.lang.Object

org.apache.hadoop.mapred.FileInputFormat<K,V>

org.apache.hadoop.mapred.SequenceFileInputFormat<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

org.apache.hadoop.mapred.SequenceFileAsBinaryInputFormat

All Implemented Interfaces:

InputFormat<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

@InterfaceAudience.Public
 @InterfaceStability.Stable
public class SequenceFileAsBinaryInputFormat
extends SequenceFileInputFormat<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

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

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
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

INPUT_DIR_RECURSIVE, LOG, NUM_INPUT_FILES

Constructor Summary

Constructors

Constructor and Description
SequenceFileAsBinaryInputFormat()

Method Summary

Modifier and Type	Method and Description
RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.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, addInputPathRecursively, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplitHosts, getSplits, isSplitable, makeSplit, 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

SequenceFileAsBinaryInputFormat

public SequenceFileAsBinaryInputFormat()

Method Detail

getRecordReader

public RecordReader<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.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<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

Overrides:

getRecordReader in class SequenceFileInputFormat<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

Parameters:

split - the InputSplit

job - the job that this split belongs to

Returns:

a RecordReader

Throws:

IOException