org.apache.hadoop.hbase.mapreduce

类 WALPlayer.WALMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<WALKey,WALEdit,ImmutableBytesWritable,Mutation>

org.apache.hadoop.hbase.mapreduce.WALPlayer.WALMapper

封闭类:

WALPlayer

protected static class WALPlayer.WALMapper
extends org.apache.hadoop.mapreduce.Mapper<WALKey,WALEdit,ImmutableBytesWritable,Mutation>

A mapper that writes out Mutation to be directly applied to a running HBase instance.

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

限定符	构造器和说明
protected	WALPlayer.WALMapper()

方法概要

方法

限定符和类型	方法和说明
protected boolean	filter(org.apache.hadoop.mapreduce.Mapper.Context context, Cell cell)
void	map(WALKey key, WALEdit value, org.apache.hadoop.mapreduce.Mapper.Context context)
void	setup(org.apache.hadoop.mapreduce.Mapper.Context context)

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

WALPlayer.WALMapper

protected WALPlayer.WALMapper()

方法详细资料

map

public void map(WALKey key,
       WALEdit value,
       org.apache.hadoop.mapreduce.Mapper.Context context)
         throws IOException

覆盖:

map 在类中 org.apache.hadoop.mapreduce.Mapper<WALKey,WALEdit,ImmutableBytesWritable,Mutation>

抛出:

IOException

filter

protected boolean filter(org.apache.hadoop.mapreduce.Mapper.Context context,
             Cell cell)

参数:

cell -

返回:

Return true if we are to emit this cell.

setup

public void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
           throws IOException

覆盖:

setup 在类中 org.apache.hadoop.mapreduce.Mapper<WALKey,WALEdit,ImmutableBytesWritable,Mutation>

抛出:

IOException