我编写了一个自定义的MyWritable,在eclipse中运行的时候他说找不道读取的文件路径，但是这个文件路径是对着的。但是把老师的项目导进来后我的就能运行了

[crazy_tiddler]

我编写了一个自定义的MyWritable,
在eclipse中运行的时候他说找不道读取的文件路径，但是这个文件路径是对着的。
并且把老师的项目导进来后我的项目就能运行了，把老师的项目删除后我的项目就会报找不到读取文件的错误。是哪里的原因，老师项目里有的系统文件配置我的项目里都有，都是直接从老师项目里cp过来的，保证没错误。
报的错误：
Exception in thread "main" org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: file:/xiaoyu/b
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:323)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:265)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:387)
at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:304)
at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:321)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:199)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1307)
at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1304)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1304)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1325)
at com.vdata.check.MyDriver.run(MyDriver.java:50)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84)
at com.vdata.check.MyDriver.main(MyDriver.java:56)

部分代码

package com.vdata.check;

import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;


public class MyDriver extends Configured implements Tool {

	@Override
	public int run(String[] args) throws Exception {
		String[] otherArgs = new GenericOptionsParser(getConf(), args)
				.getRemainingArgs();
		if (otherArgs.length < 2) {
			System.out
					.println("Wrong number of arguments: " + otherArgs.length);
			return -1;
		}
		
		

		String hdfsInPath = otherArgs[0];// 存放在hdfs上面的文件路径
		String hdfsOutPath = otherArgs[1];// 输出路径
		
		 Job job = Job.getInstance();
		 job.setJarByClass(MyWritable.class);
	     job.setJar("e://MyWritable.jar");
	     
	     job.setJobName("qweqwe");
	     
	     job.setMapperClass(MyMapper.class);
	     job.setReducerClass(MyReducer.class);
	     
	     job.setMapOutputKeyClass(Text.class);
	     job.setMapOutputValueClass(IntWritable.class);
	     job.setOutputKeyClass(Text.class);
	     job.setOutputValueClass(IntWritable.class);
	     
	     FileInputFormat.addInputPath(job, new Path(hdfsInPath));
	     FileOutputFormat.setOutputPath(job, new Path(hdfsOutPath));

	     int status=job.waitForCompletion(true)?0:1;
			return status;
	}

	public static void main(String[] args) throws Exception {
		System.setProperty("HADOOP_USER_NAME", "root");
		int status = ToolRunner.run(new MyDriver(), args);
		System.exit(status);
	}

}

package com.vdata.check;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.WritableComparable;

public class MyWritable implements WritableComparable<MyWritable>{

	private Text key;
	private LongWritable num;
	
	
	public MyWritable() {
		this(new Text(),new LongWritable());
	}

	public MyWritable(Text key, LongWritable num) {
		this.key = key;
		this.num = num;
	}

	public Text getKey() {
		return key;
	}

	public void setKey(Text key) {
		this.key = key;
	}

	public LongWritable getNum() {
		return num;
	}

	public void setNum(LongWritable num) {
		this.num = num;
	}

	@Override
	public void readFields(DataInput input) throws IOException {
		key.readFields(input);
		num.readFields(input);
	}

	@Override
	public void write(DataOutput output) throws IOException {
		key.write(output);
		num.write(output);
	}

	@Override
	public int compareTo(MyWritable obj) {
		int status=0;
		if (obj !=null) {
			status=this.key.compareTo(obj.getKey());
		}
		if (status!=0) {
			return status;
		}
		status =this.num.compareTo(obj.getNum());
		    return status;
	}

}