org.apache.accumulo.examples.simple.filedata
Class CharacterHistogram

java.lang.Object
  extended by org.apache.hadoop.conf.Configured
      extended by org.apache.accumulo.examples.simple.filedata.CharacterHistogram
All Implemented Interfaces:
org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

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

A MapReduce that computes a histogram of byte frequency for each file and stores the histogram alongside the file data. The ChunkInputFormat is used to read the file data from Accumulo. See docs/examples/README.filedata for instructions.


Nested Class Summary
static class CharacterHistogram.HistMapper
           
 
Field Summary
static String VIS
           
 
Constructor Summary
CharacterHistogram()
           
 
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
 

Field Detail

VIS

public static final String VIS
See Also:
Constant Field Values
Constructor Detail

CharacterHistogram

public CharacterHistogram()
Method Detail

main

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

run

public int run(String[] args)
        throws Exception
Specified by:
run in interface org.apache.hadoop.util.Tool
Throws:
Exception


Copyright © 2013 Apache Accumulo Project. All Rights Reserved.