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... 阅读全文

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 阅读全文