[hadoop源码阅读][9]-mapreduce-从wordcount开始
摘要：1.wordcount的代码如下 public class WordCount{ public static class TokenizerMapper extends Mapper<Object, Text, Text, IntWritable> { private final static IntWritable one = new IntWritable(1); private Text word = new Text(); public void map(Object key, Text value, Context conte...
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[hadoop源码阅读][9]-mapreduce-概论
摘要：hadoop的mapreduce的运行流程大概就是如下图所示了 如果要是文字描述,估计要大篇幅了,大家可以参考下面的参考文档. 参考文档 1.http://caibinbupt.iteye.com/blog/336467 2.http://hadoop.apache.org/docs/r0.19.2/cn/mapred_tutorial.html 3.http://developer.yahoo.com/hadoop/tutorial/module4.html
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