(venv) root@bench-04:~# mysql -uroot -proot
mysql> SHOW VARIABLES LIKE 'transaction_isolation';
+-----------------------+----------------+
| Variable_name         | Value          |
+-----------------------+----------------+
| transaction_isolation | READ-COMMITTED |
+-----------------------+----------------+
1 row in set (0.00 sec)

mysql> set global general_log = on;
Query OK, 0 rows affected (0.00 sec)

mysql> show variables like 'general%';
+------------------+-----------------------------+
| Variable_name    | Value                       |
+------------------+-----------------------------+
| general_log      | ON                          |
| general_log_file | /var/lib/mysql/bench-04.log |
+------------------+-----------------------------+
2 rows in set (0.00 sec)

(venv) root@bench-04:~/juicefs# cat  /var/lib/mysql/bench-04.log
2025-04-11T07:28:35.344596Z        21 Connect   juicedata@localhost on test3 using TCP/IP
2025-04-11T07:28:35.344732Z        21 Query     SET transaction_isolation = 'repeatable-read'
2025-04-11T07:28:35.345502Z        21 Prepare   SELECT `TABLE_NAME` from `INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEM
A`=? and `TABLE_NAME`=?
2025-04-11T07:28:35.345533Z        21 Execute   SELECT `TABLE_NAME` from `INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEM
A`='test3' and `TABLE_NAME`='jfs_setting'
2025-04-11T07:28:35.345890Z        21 Close stmt
2025-04-11T07:28:35.346044Z        21 Prepare   SELECT `name`, `value` FROM `jfs_setting` WHERE `name`=? LIMIT 1
2025-04-11T07:28:35.346075Z        21 Execute   SELECT `name`, `value` FROM `jfs_setting` WHERE `name`='format' LIMIT 1
2025-04-11T07:28:35.346171Z        21 Close stmt
2025-04-11T07:28:35.347326Z        21 Quit
2025-04-11T07:28:35.385834Z        22 Connect   juicedata@localhost on test3 using TCP/IP
2025-04-11T07:28:35.385955Z        22 Query     SET transaction_isolation = 'repeatable-read'
2025-04-11T07:28:35.386864Z        22 Prepare   SELECT `TABLE_NAME` from `INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEM
A`=? and `TABLE_NAME`=?
2025-04-11T07:28:35.386898Z        22 Execute   SELECT `TABLE_NAME` from `INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEM
A`='test3' and `TABLE_NAME`='jfs_setting'
2025-04-11T07:28:35.387197Z        22 Close stmt
2025-04-11T07:28:35.387314Z        22 Prepare   SELECT `name`, `value` FROM `jfs_setting` WHERE `name`=? LIMIT 1
2025-04-11T07:28:35.387329Z        22 Execute   SELECT `name`, `value` FROM `jfs_setting` WHERE `name`='format' LIMIT 1
2025-04-11T07:28:35.387409Z        22 Close stmt