我想在程序期间创建一个文件.但是,我不希望将此文件写在HDFS上,而是写在执行映射操作的datanode文件系统上. 我尝试了以下方法：public void map(Object key, Text value, Context context)throws IOException, InterruptedException {// do some hadoop stuff, like counting wordsString path = "newFile.txt";try {File f = new File(path);f.createNewFile();} catch (IOException e) {System.out.println("Message easy to loo...