org.apache.hadoop.mapred

类 SequenceFileAsTextInputFormat

java.lang.Object

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

org.apache.hadoop.mapred.SequenceFileInputFormat<Text,Text>

org.apache.hadoop.mapred.SequenceFileAsTextInputFormat

所有已实现的接口:

InputFormat<Text,Text>

public class SequenceFileAsTextInputFormat
extends SequenceFileInputFormat<Text,Text>

This class is similar to SequenceFileInputFormat, except it generates SequenceFileAsTextRecordReader which converts the input keys and values to their String forms by calling toString() method.

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.mapred.FileInputFormat

FileInputFormat.Counter

字段概要

从类继承的字段 org.apache.hadoop.mapred.FileInputFormat

LOG

构造器概要

构造器

构造器和说明
SequenceFileAsTextInputFormat()

方法概要

方法

限定符和类型	方法和说明
RecordReader<Text,Text>	getRecordReader(InputSplit split, JobConf job, Reporter reporter) Get the RecordReader for the given InputSplit.

从类继承的方法 org.apache.hadoop.mapred.SequenceFileInputFormat

listStatus

从类继承的方法 org.apache.hadoop.mapred.FileInputFormat

addInputPath, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplitHosts, getSplits, isSplitable, setInputPathFilter, setInputPaths, setInputPaths, setMinSplitSize

从类继承的方法 java.lang.Object

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

构造器详细资料

SequenceFileAsTextInputFormat

public SequenceFileAsTextInputFormat()

方法详细资料

getRecordReader

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

从接口复制的说明: 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.

指定者:

getRecordReader 在接口中 InputFormat<Text,Text>

覆盖:

getRecordReader 在类中 SequenceFileInputFormat<Text,Text>

参数:

split - the InputSplit

job - the job that this split belongs to

返回:

a RecordReader

抛出:

IOException