com.mapr.fs.hbase.tools.mapreduce

Class DiffTables.DiffTableMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result,KEYOUT,VALUEOUT>

org.apache.hadoop.hbase.mapreduce.TableMapper<org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result>

com.mapr.fs.hbase.tools.mapreduce.DiffTables.DiffTableMapper

Enclosing class:

DiffTables

public static class DiffTables.DiffTableMapper
extends org.apache.hadoop.hbase.mapreduce.TableMapper<org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	DiffTables.DiffTableMapper.FirstExitChecker

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

org.apache.hadoop.mapreduce.Mapper.Context

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	outputDstToSrcName
static java.lang.String	outputSrcToDstName

Constructor Summary

Constructors

Constructor and Description
DiffTableMapper()

Method Summary

Modifier and Type	Method and Description
protected void	cleanup(org.apache.hadoop.mapreduce.Mapper.Context context)
void	map(org.apache.hadoop.hbase.io.ImmutableBytesWritable row, org.apache.hadoop.hbase.client.Result srcResult, org.apache.hadoop.mapreduce.Mapper.Context context) Map method that compares every scanned row with the equivalent from a distant cluster.
void	run(org.apache.hadoop.mapreduce.Mapper.Context context)
void	setup(org.apache.hadoop.mapreduce.Mapper.Context context)
void	startFirstExitChecker(org.apache.hadoop.mapreduce.Mapper.Context context)

Methods inherited from class java.lang.Object

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

Field Detail

outputSrcToDstName

public static java.lang.String outputSrcToDstName

outputDstToSrcName

public static java.lang.String outputDstToSrcName

Constructor Detail

DiffTableMapper

public DiffTableMapper()

Method Detail

startFirstExitChecker

public void startFirstExitChecker(org.apache.hadoop.mapreduce.Mapper.Context context)
                           throws java.io.IOException

Throws:

java.io.IOException

setup

public void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
           throws java.io.IOException,
                  java.lang.InterruptedException

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result,org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result>

Throws:

java.io.IOException

java.lang.InterruptedException

run

public void run(org.apache.hadoop.mapreduce.Mapper.Context context)
         throws java.io.IOException,
                java.lang.InterruptedException

Overrides:

run in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result,org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result>

Throws:

java.io.IOException

java.lang.InterruptedException

map

public void map(org.apache.hadoop.hbase.io.ImmutableBytesWritable row,
                org.apache.hadoop.hbase.client.Result srcResult,
                org.apache.hadoop.mapreduce.Mapper.Context context)
         throws java.io.IOException,
                java.lang.InterruptedException

Map method that compares every scanned row with the equivalent from a distant cluster.

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result,org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result>

Parameters:

row - The current table row key.

value - The columns.

context - The current context.

Throws:

java.lang.InterruptedException

java.io.IOException - When something is broken with the data.

cleanup

protected void cleanup(org.apache.hadoop.mapreduce.Mapper.Context context)
                throws java.io.IOException,
                       java.lang.InterruptedException

Overrides:

cleanup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result,org.apache.hadoop.hbase.io.ImmutableBytesWritable,org.apache.hadoop.hbase.client.Result>

Throws:

java.io.IOException

java.lang.InterruptedException