Java hadoop map reduce程序不显示输出

我有一个java的wriiten map reduce程序

public class myproject {

   public static class Map extends Mapper<LongWritable, Text, Text, Text> {
     private final static IntWritable one = new IntWritable(1);
     private Text word = new Text();

     public void map(LongWritable key, Text value, OutputCollector<Text, Text> output, Reporter reporter) throws IOException {
       String line = value.toString();
         /*
           MY CODE
         */
         output.collect(new Text(string1),new Text(string2));
       }
     }
public class Reduce extends Reducer<Text, Text, Text, IntWritable> {
     public void reduce(Text key, Iterator<Text> values, OutputCollector<Text, IntWritable> output, Reporter reporter) throws IOException {

       while (values.hasNext()) {
         /*
            MY CODE
         */
             values.next();
                     }
       output.collect(key, new IntWritable(val));
     }
        }
       public static void main(String[] args) throws Exception {
 JobConf conf = new JobConf(myproject.class);
 conf.setJobName("myprojectwork");

 conf.setOutputKeyClass(Text.class);
 conf.setOutputValueClass(IntWritable.class);

     conf.setMapOutputKeyClass(Text.class);
     conf.setMapOutputValueClass(Text.class);

 conf.setMapperClass(Map.class);
 conf.setCombinerClass(Reduce.class);
 conf.setReducerClass(Reduce.class);

 conf.setInputFormat(TextInputFormat.class);
 conf.setOutputFormat(TextOutputFormat.class);

 FileInputFormat.setInputPaths(conf, new Path(args[0]));
 FileOutputFormat.setOutputPath(conf, new Path(args[1]));

 JobClient.runJob(conf);

它只显示这个，然后退出

WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

当我尝试列出项目文件夹/输出文件夹时 它不显示这样的文件/目录

wordcount问题工作得非常好，但我的程序不工作

有什么我遗漏的吗

---

我是否必须编辑hadoop目录中的任何.xml文件或类似文件？

您不是在混合使用2个hadoop api吗？在较新的api中，上下文对象不是收集器。将映射方法更改为公共void映射（LongWritable键、文本值、上下文上下文）引发IOException、InterruptedException。reducer toook也是一样，我现在更改了它，它在线程“main”java.io.IOException中显示以下错误异常：作业失败！在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在myproject.main（myproject.java:68）在org.apache.apache.apache在org.apache.hadoop.util.RunJar.main（RunJar.java:212）的java.lang.reflect.Method.invoke（Method.java:483）中的异常部分，我已经声明在map和reduce函数中都显示IOException。请编辑代码并发布运行的内容好吗？

WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable