嗨，我是mapreduce的初学者，我想编程wordcount以便它输出k/v对。但问题是我不想使用“tab”作为文件的键值对分隔符。我怎样才能改变它？
我使用的代码与示例代码略有不同。这是驱动程序类。

Configuration conf = new Configuration();
    Job job = Job.getInstance(conf, "Job1");
    job.setJarByClass(Simpletask.class);
    job.setMapperClass(TokenizerMapper.class);
    //job.setCombinerClass(IntSumReducer.class);
    job.setReducerClass(IntSumReducer.class);
    job.setOutputKeyClass(IntWritable.class);
    job.setOutputValueClass(Text.class);
    FileInputFormat.addInputPath(job, new Path(args[0]));
    FileOutputFormat.setOutputPath(job, new Path(args[1]));
    LazyOutputFormat.setOutputFormatClass(job, TextOutputFormat.class);

由于我希望文件名与reducer的分区相对应，所以在reduce函数中使用multipleout.write（），因此代码略有不同。

public void reduce(IntWritable key,Iterable<Text> values, Context context) throws IOException, InterruptedException {
    String accu = "";
    for (Text val : values) {
        String[] entry=val.toString().split(",");
        String MBR = entry[1];
        //ASSUME MBR IS ENTRY 1. IT CAN BE REPLACED BY INVOKING FUNCTION TO CALCULATE MBR([COORDINATES])
        String mes_line = entry[0]+",MBR"+MBR+" ";
        result.set(mes_line);
        mos.write(key, result, generateFileName(key));
    }

任何帮助都将不胜感激！谢谢您！