public void init() throws IOException {
        Configuration mc = new Configuration();
        mc.set("fs.default.name", "hdfs://192.168.178.40:9000");
        this.fs = FileSystem.get(mc);
        System.setProperty("HADOOP_HOME", hadoopContext.getHome());
        System.setProperty("HADOOP_USER_NAME", hadoopContext.getUser());
    }