java控制台日志未通过org打印。阿帕奇。hadoop。mapreduce。作业的waitForCompletion（true）方法

Question

正如waitForCompletion（Boolean xxx）方法的文档所述

The waitForCompletion() method on Job submits the job and waits for it to finish. The single argument to the method is a flag indicating whether verbose output is generated. When true, the job writes information about its progress to the console.

在我下面的练习中，我将把这个论点设置为true。但仍然无法在控制台上打印详细的输出。 这是我的密码：

public class MaxTemperature extends Configured implements Tool {

  public static void main(String[] args) throws Exception {
      int exitCode = ToolRunner.run(new MaxTemperature(), args);
      System.exit(exitCode);
  }

  @Override
    public int run(String[] args) throws Exception {
        if (args.length != 2) {
              System.err.println("Usage: MaxTemperature <input path> <output path>");
              System.exit(-1);
            }
        System.out.println("Starting job");
        Job job = new Job();
        job.setJarByClass(MaxTemperature.class);
        job.setJobName("Max temperature");

        FileInputFormat.addInputPath(job, new Path(args[0]));
        FileOutputFormat.setOutputPath(job, new Path(args[1]));

        job.setMapperClass(MaxTemperatureMapper.class);
        job.setReducerClass(MaxTemperatureReducer.class);

        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(IntWritable.class);
        int returnValue = job.waitForCompletion(true) ? 0:1;

        if(job.isSuccessful()) {
            System.out.println("Job was successful");
        } else if(!job.isSuccessful()) {
            System.out.println("Job was not successful");           
        }
        return returnValue;
    }
}

这是控制台：

Starting job
Job was successful

这是我的log4j。资源文件夹中的属性文件：

log4j.rootLogger=DEBUG, CA

log4j.appender.CA=org.apache.log4j.ConsoleAppender

log4j.appender.CA.layout=org.apache.log4j.PatternLayout
log4j.appender.CA.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

有什么建议吗？为什么工作进度和细节信息没有打印出来