text: DROP TABLE IF EXISTS WORKER_NODE;
  CREATE TABLE WORKER_NODE
  (
      ID          BIGINT      NOT NULL AUTO_INCREMENT COMMENT 'auto increment id',
      HOST        VARCHAR(64) NOT NULL COMMENT 'host name',
      PORT        VARCHAR(64) NOT NULL COMMENT 'port',
      TYPE        INT         NOT NULL COMMENT 'node type: ACTUAL or CONTAINER',
      LAUNCH_DATE DATE        NOT NULL COMMENT 'launch date',
      MODIFIED    TIMESTAMP   NOT NULL COMMENT 'modified time',
      CREATED     TIMESTAMP   NOT NULL COMMENT 'created time',
      PRIMARY KEY (ID)
  ) COMMENT ='DB WorkerID Assigner for UID Generator', ENGINE = INNODB;
  