摘要：
MRUnit MRUnit是一款由Couldera公司开发的专门针对Hadoop中编写MapReduce单元测试的框架。定义Map逻辑import java.io.IOException;import org.apache.hadoop.io.*;import org.apache.hadoop.mapreduce.Mapper;public class WordMapper extends Mapper<LongWritable, Text, Text, Text> { @Override public void map(LongWritable key, Text value. 阅读全文