String input2 = path.get("input2");
String output = path.get("output");
HdfsDAO hdfs = new HdfsDAO(MainRun.HDFS, conf);
hdfs.rmr(input);
hdfs.mkdirs(input);
hdfs.copyFile(path.get("m1"), input1);
hdfs.copyFile(path.get("m2"), input2);
Job job = new Job(conf);
job.setJarByClass(MartrixMultiply.class);