@Override
  public void checkOutputSpecs(FileSystem ignored, JobConf job) throws IOException {
    actualOutputFormat.checkOutputSpecs(ignored, job);
  }
This pass through class is used to wrap OutputFormat implementations such that new OutputFormats not derived from
 HiveOutputFormat gets through the checker
ql/src/java/org/apache/hadoop/hive/ql/io/HivePassThroughOutputFormat.java