anchor.diff:  (
     `id` int(11) NOT NULL AUTO_INCREMENT,
     `activity` varchar(128) NOT NULL,
  -  `hdfs_user_id` binary(16) NOT NULL,
  +  `hdfs_user_id` int(11) NOT NULL,
     `created` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
     `parent_id` int NOT NULL,
     `name` varchar(255) NOT NULL,
  
positive.code:   PRIMARY KEY (`id`),
    UNIQUE KEY(`projectname`),
    UNIQUE KEY(`inode_pid`, `inode_name`),
    FOREIGN KEY (`username`) REFERENCES `users` (`email`) ON DELETE NO ACTION ON UPDATE NO ACTION,
    FOREIGN KEY (`inode_pid`,`inode_name`) REFERENCES `hops`.`hdfs_inodes`(`parent_id`,`name`) ON DELETE CASCADE ON UPDATE NO ACTION
  ) ENGINE=ndbcluster;
  
negative.code:  `id` INT(11) NOT NULL AUTO_INCREMENT,
   `topic_name` VARCHAR(255) NOT NULL,
   `project_id` INT(11) NOT NULL,
   `username` VARCHAR(150) NOT NULL,
   `permission_type` VARCHAR(255) NOT NULL,
   `operation_type` VARCHAR(255) NOT NULL,
   `host` VARCHAR(255) NOT NULL,
   `role` VARCHAR(255) NOT NULL,
    PRIMARY KEY (`id`),
    FOREIGN KEY (`username`) REFERENCES `users` (`email`) ON DELETE NO ACTION ON UPDATE NO ACTION,
    FOREIGN KEY `topic_idx` (`topic_name`, `project_id`) REFERENCES `project_topics` (`topic_name`, `project_id`) ON DELETE CASCADE ON UPDATE NO ACTION
  ) ENGINE=ndbcluster ;
  
  