org.apache.accumulo.examples.simple.mapreduce

Class UniqueColumns

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.accumulo.examples.simple.mapreduce.UniqueColumns

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

public class UniqueColumns
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

A simple map reduce job that computes the unique column families and column qualifiers in a table. This example shows one way to run against an offline table.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UniqueColumns.UMapper
static class	UniqueColumns.UReducer

Constructor Summary

Constructors

Constructor and Description
UniqueColumns()

Method Summary

Methods

Modifier and Type	Method and Description
static void	main(String[] args)
int	run(String[] args)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

UniqueColumns

public UniqueColumns()

Method Detail

run

public int run(String[] args)
        throws Exception

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

Exception

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception