anchor.diff:    `start_time` datetime DEFAULT NULL,
     `status` varchar(255) DEFAULT NULL,
     PRIMARY KEY (`ID`)
  -) ENGINE=ndbcluster DEFAULT CHARSET=latin1
  -
  +) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
  +
  +
  +-- ------------------------
  +-- tensorflow
  +-- ------------------------
  +
  +CREATE TABLE `tf_resources` (
  +  `id` INT NOT NULL AUTO_INCREMENT,
  +  `host_id` VARCHAR(128) NOT NULL,
  +  `device_id` INT NOT NULL,
  +  `device_path` VARCHAR(255) NOT NULL,
  +  `resource` VARCHAR(20) NOT NULL,
  +  `free` tinyint(1) NOT NULL DEFAULT '1',
  +  KEY `resource_idx` (`resource`),
  +  FOREIGN KEY (`host_id`) REFERENCES `hosts` (`hostid`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  PRIMARY KEY (`id`)
  +) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
  +
  +
  +CREATE TABLE `tf_clusters` (
  +  `id` INT NOT NULL AUTO_INCREMENT,
  +  `name` VARCHAR(150) NOT NULL,
  +  `creator` VARCHAR(150) NOT NULL,
  +  `project_id` INT NOT NULL,
  +  FOREIGN KEY (`creator`) REFERENCES `users` (`email`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  +  FOREIGN KEY (`project_id`) REFERENCES `project` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  PRIMARY KEY (`id`)
  +) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
  +
  +
  +CREATE TABLE `tf_jobs` (
  +  `id` INT NOT NULL AUTO_INCREMENT,
  +  `cluster_id` INT NOT NULL,
  +  `name` VARCHAR(150) NOT NULL,
  +  `type` VARCHAR(50) NOT NULL,
  +  KEY `name_idx` (`name`),
  +  FOREIGN KEY (`cluster_id`) REFERENCES `tf_clusters` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  PRIMARY KEY (`id`)
  +) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
  +
  +
  +-- One task per host. Tasks belong to a job (type).
  +-- One or many resource(s) per task?!? Either supported here.
  +CREATE TABLE `tf_tasks` (
  +  `id` INT NOT NULL,
  +  `job_id` INT NOT NULL,
  +  `resource_id` INT NOT NULL,
  +  FOREIGN KEY (`job_id`) REFERENCES `tf_jobs` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  FOREIGN KEY (`resource_id`) REFERENCES `tf_resources` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  PRIMARY KEY (`id`)
  +) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
  +
  +
  +CREATE TABLE `tf_executions` (
  +  `attempt_id` INT NOT NULL,
  +  `cluster_id` INT NOT NULL,
  +  `job_id` INT NOT NULL,
  +  `resource_id` INT NOT NULL,
  +  `result` VARCHAR(255) NOT NULL,
  +  `start_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  +  `end_time` TIMESTAMP NOT NULL  DEFAULT CURRENT_TIMESTAMP,
  +  `proj_user` VARCHAR(150) NOT NULL,
  +  `project_id` INT NOT NULL,
  +  KEY `proj_user_idx` (`proj_user`),
  +  FOREIGN KEY (`project_id`) REFERENCES `project` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  FOREIGN KEY (`cluster_id`) REFERENCES `tf_clusters` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  +  FOREIGN KEY (`job_id`) REFERENCES `tf_jobs` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  +  FOREIGN KEY (`resource_id`) REFERENCES `tf_resources` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  FOREIGN KEY (`proj_user`) REFERENCES `users` (`email`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  +  PRIMARY KEY (`attempt_id`)
  +) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
  +
  +
  +CREATE TABLE `tf_fifo_queue` (
  +  `id` INT NOT NULL AUTO_INCREMENT,
  +  `cluster_id` INT NOT NULL,
  +  `proj_user` VARCHAR(150) NOT NULL,
  +  `num_cpus` INT NOT NULL DEFAULT 0,
  +  `num_gpus` INT NOT NULL DEFAULT 0,
  +  `submission_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  +  FOREIGN KEY (`proj_user`) REFERENCES `users` (`email`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  FOREIGN KEY (`cluster_id`) REFERENCES `tf_clusters` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION,
  +  PRIMARY KEY (`id`)
  +) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
  +
  
positive.code:     FOREIGN KEY (`uid`) REFERENCES `users` (`uid`) ON DELETE CASCADE
  ) ENGINE=ndbcluster DEFAULT CHARSET=latin1;
  
  -- Metadata --------------
  -- ------------------------
  
  
negative.code: 
  -- create index yarn_app_heuristic_result_details_i1 on yarn_app_heuristic_result_details (name);
  
  
  -- ------------------------
  -- ePipe
  -- ------------------------
  
  CREATE TABLE `epipe_recovery` (
    `table` tinyint(1) NOT NULL,
  