mysqldump：“INFORMATION_SCHEMA.SESSION_VARIABLES”功能已禁用

当我尝试在 Percona Server 5.7.17-12 上运行 mysqldump 时，出现以下错误：

# mysqldump -u backups -pxxxx -h 127.0.0.1 --single-transaction --quick dbname
mysqldump: [Warning] Using a password on the command line interface can be insecure.
-- MySQL dump 10.13  Distrib 5.7.17-12, for debian-linux-gnu (x86_64)
--
-- Host: 127.0.0.1    Database: dbname
-- ------------------------------------------------------
-- Server version       5.7.17-12

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
/*!50112 SELECT COUNT(*) INTO @is_rocksdb_supported FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='rocksdb_bulk_load' */;
/*!50112 SET @save_old_rocksdb_bulk_load = IF (@is_rocksdb_supported, 'SET @old_rocksdb_bulk_load = @@rocksdb_bulk_load', 'SET @dummy_old_rocksdb_bulk_load = 0') */;
/*!50112 PREPARE s FROM @save_old_rocksdb_bulk_load */;
/*!50112 EXECUTE s */;
/*!50112 SET @enable_bulk_load = IF (@is_rocksdb_supported, 'SET SESSION rocksdb_bulk_load = 1', 'SET @dummy_rocksdb_bulk_load = 0') */;
/*!50112 PREPARE s FROM @enable_bulk_load */;
/*!50112 EXECUTE s */;
/*!50112 DEALLOCATE PREPARE s */;
mysqldump: Couldn't execute 'SELECT COUNT(*) FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME LIKE 'rocksdb\_skip\_fill\_cache'': The 'INFORMATION_SCHEMA.SESSION_VARIABLES' feature is disabled; see the documentation for 'show_compatibility_56' (3167)

为什么 mysqldump 试图使用该不推荐使用的变量？除了启用之外还有什么方法可以修复它show_compatibility_56（我宁愿不这样做也不重新启动服务器）