What is the usage of Configured class in Hadoop programs?
问题 Most of Hadoop MapReduce programs are like this: public class MyApp extends Configured Implements Tool { @Override public int run(String[] args) throws Exception { Job job = new Job(getConf()); /* process command line options */ return job.waitForCompletion(true) ? 0 : 1; } public static void main(String[] args) throws Exception { int exitCode = ToolRunner.run(new MyApp(), args); System.exit(exitCode); } } What is the usage of Configured ? As Tool and Configured both have getConf() and