TestChainErrors.java 文件源码

/**
 * Tests one of the maps consuming output.
 * 
 * @throws Exception
 */
public void testChainMapNoOuptut() throws Exception {
  Configuration conf = createJobConf();
  String expectedOutput = "";

  Job job = MapReduceTestUtil.createJob(conf, inDir, outDir, 1, 0, input);
  job.setJobName("chain");

  ChainMapper.addMapper(job, ConsumeMap.class, IntWritable.class, Text.class,
      LongWritable.class, Text.class, null);

  ChainMapper.addMapper(job, Mapper.class, LongWritable.class, Text.class,
      LongWritable.class, Text.class, null);

  job.waitForCompletion(true);
  assertTrue("Job failed", job.isSuccessful());
  assertEquals("Outputs doesn't match", expectedOutput, MapReduceTestUtil
      .readOutput(outDir, conf));
}