edu.umd.cloud9.demo
Class DemoWordCountTuple1

java.lang.Object
  edu.umd.cloud9.demo.DemoWordCountTuple1

public class DemoWordCountTuple1
extends Object

Demo that illustrates use of Tuple objects as intermediate keys in a MapReduce job. Input comes from the Bible+Shakespeare sample collection, packed into a SequenceFile with DemoPackTuples1. Output shows the count of words on even- and odd-length lines.

Format of the output SequenceFile: The key is a Tuple. The first field of the tuple contains a word and the second field indicates whether the word was found on a even-length or odd-length line. The value is the count of the word on either even- or odd-length lines.

See Also:

DemoWordCountTuple2, DemoWordCountJSON

Nested Class Summary

static class	DemoWordCountTuple1.MyMapper
static class	DemoWordCountTuple1.MyReducer

Method Summary

static void

main(String[] args) Runs the demo.

Methods inherited from class java.lang.Object

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

Method Detail

main

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

Runs the demo.

Throws:

IOException