@Override
  void setCommandLineArguments(SchemaToolCommandLine cmdLine) {
    if (cmdLine.hasOption("yes")) {
      this.yes = true;
    }
  }
{@link SchemaToolTaskDrop} drops all data from Hive. It invokes DROP TABLE on all
tables of the default database and DROP DATABASE CASCADE on all other databases.
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/tools/schematool/SchemaToolTaskDrop.java