摘要： import java.io.IOException;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import org.apache.hadoop.conf.Configuration;import org.apache.hadoop.conf.Configured;import org.apache.hadoop.fs.Path;import org.apache.hadoop.io.IntWritable;import org.apache.hadoop.io.LongWritable;im 阅读全文