code: public int launch(final String configurationHdfsPath, final String jobHdfsPath) throws Exception {
          // create hadoop configuration directory
          final File hadoopConfDir = createTemporaryHadoopConfDir();
  
          final SparkLauncher sparkLauncher =
                  createSparkLauncher(hadoopConfDir, configurationHdfsPath, jobHdfsPath, null);
  
          return launch(sparkLauncher);
      }
docs: Launches and waits for the execution of a DataCleaner job on Spark.
  
  @param configurationHdfsPath
  configuration file path (on HDFS)
  @param jobHdfsPath
  job file path (on HDFS)
  @return the exit code of the spark-submit process
  @throws Exception