mapreduce Bet

import java.io.IOException;
import java.io.PrintStream;
import java.util.StringTokenizer;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.mapred.lib.MultipleOutputs;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mapreduce.Reducer.Context;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.input.FileSplit;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;


public class BET {

  public static class TokenizerMapper
       extends Mapper<Object, Text, Text, Text>{
   
    private final static IntWritable one = new IntWritable(1);
    private final static Text creditBalance = new Text("creditBalance");
    private final static Text betString = new Text("betString");
    private Text word = new Text();
    public void map(Object key, Text value, Context context
                    ) throws IOException, InterruptedException {
//    value =new Text("hello zhrg bey zhrg") ;
     StringTokenizer itr = new StringTokenizer(value.toString());
      while (itr.hasMoreTokens()) {
        word.set(itr.nextToken());
      //  context.write(word, one);
      }
    FileSplit fs = (FileSplit) context.getInputSplit(); 
        Path grandpa = fs.getPath().getParent().getParent(); 
        String date = grandpa.getName(); 
        if(date == null) 
            throw new RuntimeException("The input path is not right. No date field can be extracted!"); 
   
        word.set("creditBalance1creditBalance2:"+key);
    context.write(creditBalance,word);
    word.set("betString1betString2:"+key);
    context.write(betString,word);
    }
  }
  //对每一个数字进行汇总求和 
  public static class SumCombiner extends 
          Reducer<Text,Text,Text,Text> { 
      private LongWritable result = new LongWritable(); 
      private Text k = new Text("midsum"); 
      private Text text = new Text();
      public void reduce(Text key, Iterable<Text> values,
              Context context
              ) throws IOException, InterruptedException {StringBuffer sb = new StringBuffer();
              for(Text tx:values){
              sb.append(tx.toString());
              }
              text.set(sb.toString());
              context.write(key, text);
              } 
  }
 
  public static class IntSumReducer
       extends Reducer<Text,Text,Text,Text> {
    private IntWritable result = new IntWritable();

    private Text text = new Text();
    public void reduce(Text key, Iterable<Text> values,
                       Context context
                       ) throws IOException, InterruptedException {
      int sum = 0;
     /* for (IntWritable val : values) {
        sum += val.get();
      }*/
     // result.set(sum);

      StringBuffer sb = new StringBuffer();
      for(Text tx:values){
      sb.append(tx.toString());
      }
      text.set(sb.toString());
      context.write(key, text);
    }
  }

  public static void main(String[] args) throws Exception {
//  Path path = new Path("/hadoop/file01");
    Configuration conf = new Configuration();
   
    String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
    if (otherArgs.length != 2) {
      System.err.println("Usage: wordcount <in> <out>");
      System.exit(2);
    }
    HDFS_File fu = new HDFS_File();
    String src = "/install/sumnum.txt";
    // HadoopFileUtil hu = new HadoopFileUtil();
//    String src = "/hadoop/files02";
    /*String dst = "hdfs://s21:9000/user/sumnum";
    if(!fu.CheckFileExist(conf, dst))
    fu.PutFile(conf, src, dst);*/
   // fu.putFileFormLocal(conf,"/install/sumnum.txt", otherArgs[0] );
  /*  String str = otherArgs[1]+"/sum_its4";
    if(fu.CheckFileExist(conf, str))
    fu.DelFile(conf, str, true);
    str = otherArgs[1]+"/_SUCCESS";
    if(fu.CheckFileExist(conf, str));
    fu.DelFile(conf, str, true);
    str = otherArgs[1];
    if(fu.CheckFileExist(conf, str));
    fu.DelFile(conf, str, true);*/
    Job job = new Job(conf, "word count");
    job.setJarByClass(BET.class);
    job.setMapperClass(TokenizerMapper.class);
    job.setCombinerClass(SumCombiner.class); 
    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(Text.class);
    job.setOutputValueClass(Text.class);
//    job.setOutputFormatClass(coAuOutputFormat.class); 
    FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
    FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));
    System.exit(job.waitForCompletion(true) ? 0 : 1);
    System.out.println("ok");
  }
}