Hadoop mapreduce作业没有';我不会被处决

Hadoop mapreduce作业没有';我不会被处决,hadoop,mapreduce,avro,Hadoop,Mapreduce,Avro,我有一个简单的MapReduce作业,我从中借用了它,并做了一些小的修改(我删除了reducer)。它基本上以一个简单的avro文件作为输入。下面是avro文件的模式 avro模式: { "type": "record", "name": "User", "fields": [ {"name": "name", "type": "string"}, {"name": "favorite_number", "type": "int"}, {"name":"favorite_color", "t

我有一个简单的MapReduce作业,我从中借用了它,并做了一些小的修改(我删除了reducer)。它基本上以一个简单的avro文件作为输入。下面是avro文件的模式

avro模式:

 {
"type": "record",
"name": "User",
"fields": [
{"name": "name", "type": "string"},
{"name": "favorite_number",  "type": "int"},
{"name":"favorite_color", "type": "string"}
]
}
下面是我的mapreduce工作(映射器和主要功能):


当我运行程序时,它返回false并且没有成功。我想不出这个问题。有人能帮忙吗?

您已将映射器的值类型设置为空可写。然后在main/driver中,将Map输出值类设置为intwriteable。映射器和主/驱动程序中的值类型应该相同。相应地修改您的程序。如果您有解决方案,请接受我的回答。

您有解决方案吗?
public class ColorCountMapper extends Mapper<AvroKey<User>, NullWritable, Text, IntWritable> {

@Override
public void map(AvroKey<User> key, NullWritable value, Context context)  throws IOException, InterruptedException {

  CharSequence color = key.datum().getFavoriteColor();
  if (color == null) {
    color = "none";
  }
  context.write(new Text(color.toString()), new IntWritable(1));
}
public static void main(String[] args) throws Exception {


    Configuration conf = new Configuration();
    Job job = Job.getInstance(conf, "TestColor");
    job.setJarByClass(runClass.class);
    job.setJobName("Color Count");

    FileInputFormat.setInputPaths(job, new Path("in"));
    FileOutputFormat.setOutputPath(job, new Path("out"));

    job.setInputFormatClass(AvroKeyInputFormat.class);
    job.setMapperClass(ColorCountMapper.class);
    AvroJob.setInputKeySchema(job, User.getClassSchema());
    job.setMapOutputKeyClass(Text.class);
    job.setMapOutputValueClass(IntWritable.class);


    boolean r = job.waitForCompletion(true);
    System.out.println(r);  
}