@Override
    public void execute() {
      try {
        startHiveServer2();
      } catch (Throwable t) {
        LOG.error("Error starting HiveServer2", t);
        System.exit(-1);
      }
    }
StartOptionExecutor: starts HiveServer2.
This is the default executor, when no option is specified.
service/src/java/org/apache/hive/service/server/HiveServer2.java