我想在eclipse中使用hadoopmapreduce而不需要输入文件，基本上我有一个对象列表，我想用这个列表来创建我需要的所有东西（键和值），我怎么做？我做了一些研究，但所有的输入格式似乎与一个输入文件
目前我有这个：

import java.io.IOException;
import java.util.List;

import org.apache.hadoop.io.Text;

import org.apache.hadoop.mapreduce.InputSplit;

import org.apache.hadoop.mapreduce.RecordReader;

import org.apache.hadoop.mapreduce.TaskAttemptContext; 

public class SolverInputFormatClass extends RecordReader<Text,PropNogood>{

private Integer key=null;

private PropNogood value=null;

private List<PropNogood> list=null;

private int p=0;

@Override

public void close() throws IOException {

        // TODO Auto-generated method stub

        if(!list.iterator().hasNext()){

        list=null;
        }

        key=null;

        value=null;
    }

@Override

public Text getCurrentKey() throws IOException, InterruptedException {

        // TODO Auto-generated method stub

        return new Text(this.key+value.varstoString());
    }

@Override

public PropNogood getCurrentValue() throws IOException, InterruptedException {

        // TODO Auto-generated method stub

        return this.value;
    }

@Override

public float getProgress() throws IOException, InterruptedException {

        // TODO Auto-generated method stub

        return this.list.indexOf(value)/this.list.size();
    }

@Override
    public void initialize(InputSplit split, TaskAttemptContext context)throws IOException, InterruptedException {

        // TODO Auto-generated method stub

    }

@Override

public boolean nextKeyValue() throws IOException, InterruptedException {

        // TODO Auto-generated method stub

        if(p<list.size()){

            value=list.get(p);

            key=value.cardinality();

            p++;

            return true;

        }

        else{

            return false;

        }

}

}

但我不知道如何初始化列表。谢谢！