/** Runs a GridMix data-generation job. */ private static void runDataGenJob(Configuration conf, Path tempDir) throws IOException, ClassNotFoundException, InterruptedException { JobClient client = new JobClient(conf); // get the local job runner conf.setInt(MRJobConfig.NUM_MAPS, 1); Job job = new Job(conf); CompressionEmulationUtil.configure(job); job.setInputFormatClass(CustomInputFormat.class); // set the output path FileOutputFormat.setOutputPath(job, tempDir); // submit and wait for completion job.submit(); int ret = job.waitForCompletion(true) ? 0 : 1; assertEquals("Job Failed", 0, ret); }