机器学习中大数据对数据的排序

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file1: 
43 
32 
5 
6 
file2: 
98 
1234 
356 
2 
output: 
1 2 
2 5 
3 6 
4 32 
5 43 
6 98 
7 356 
8 1234


public class Sort {

    public static class Map extends Mapper<Object, Text, IntWritable, IntWritable>{


        private static IntWritable data = new IntWritable();
        public void map(Object key, Text value, Context context) throws IOException, InterruptedException {
            String line = value.toString();