org.apache.hadoop.hbase.mapreduce

Class WALPlayer.WALMapper

java.lang.Object

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

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

Enclosing class:

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.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	WALPlayer.WALMapper()

Method Summary

Methods

Modifier and Type	Method and Description
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)

Methods inherited from class org.apache.hadoop.mapreduce.Mapper

cleanup, run

Methods inherited from class java.lang.Object

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

Constructor Detail

WALPlayer.WALMapper

protected WALPlayer.WALMapper()

Method Detail

map

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

Overrides:

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

Throws:

IOException

filter

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

Parameters:

cell -

Returns:

Return true if we are to emit this cell.

setup

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

Overrides:

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

Throws:

IOException