org.apache.hadoop.hbase.mapreduce

类 TsvImporterTextMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,ImmutableBytesWritable,org.apache.hadoop.io.Text>

org.apache.hadoop.hbase.mapreduce.TsvImporterTextMapper

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class TsvImporterTextMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,ImmutableBytesWritable,org.apache.hadoop.io.Text>

Write table content out to map output files.

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.mapreduce.Mapper

org.apache.hadoop.mapreduce.Mapper.Context

构造器概要

构造器

构造器和说明
TsvImporterTextMapper()

方法概要

方法

限定符和类型	方法和说明
protected void	doSetup(org.apache.hadoop.mapreduce.Mapper.Context context) Handles common parameter initialization that a subclass might want to leverage.
org.apache.hadoop.mapreduce.Counter	getBadLineCount()
boolean	getSkipBadLines()
void	incrementBadLineCount(int count)
void	map(org.apache.hadoop.io.LongWritable offset, org.apache.hadoop.io.Text value, org.apache.hadoop.mapreduce.Mapper.Context context) Convert a line of TSV text into an HBase table row.
protected void	setup(org.apache.hadoop.mapreduce.Mapper.Context context) Handles initializing this class with objects specific to it (i.e., the parser).

从类继承的方法 org.apache.hadoop.mapreduce.Mapper

cleanup, run

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

TsvImporterTextMapper

public TsvImporterTextMapper()

方法详细资料

getSkipBadLines

public boolean getSkipBadLines()

getBadLineCount

public org.apache.hadoop.mapreduce.Counter getBadLineCount()

incrementBadLineCount

public void incrementBadLineCount(int count)

setup

protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)

Handles initializing this class with objects specific to it (i.e., the parser). Common initialization that might be leveraged by a subsclass is done in doSetup. Hence a subclass may choose to override this method and call doSetup as well before handling it's own custom params.

覆盖:

setup 在类中 org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,ImmutableBytesWritable,org.apache.hadoop.io.Text>

参数:

context -

doSetup

protected void doSetup(org.apache.hadoop.mapreduce.Mapper.Context context)

Handles common parameter initialization that a subclass might want to leverage.

参数:

context -

map

public void map(org.apache.hadoop.io.LongWritable offset,
       org.apache.hadoop.io.Text value,
       org.apache.hadoop.mapreduce.Mapper.Context context)
         throws IOException

Convert a line of TSV text into an HBase table row.

覆盖:

map 在类中 org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,ImmutableBytesWritable,org.apache.hadoop.io.Text>

抛出:

IOException