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

java.lang.Object
  extended by org.apache.hadoop.conf.Configured
      extended by 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
static class UniqueColumns.UMapper
           
static class UniqueColumns.UReducer
           
 
Constructor Summary
UniqueColumns()
           
 
Method Summary
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


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