Error
Error Code:
4010
MySQL Error 4010: Unsafe DML/DDL with ACL Read
Description
This error indicates a potential data inconsistency risk in a replicated MySQL environment. It occurs when a Data Manipulation Language (DML) or Data Definition Language (DDL) statement updates a table based on a read operation from an ACL (Access Control List) table. MySQL flags this as unsafe because row locks are skipped for ACL tables, which can lead to divergent data between the source and replica servers.
Error Message
The statement is unsafe because it updates a table depending on ACL table read operation. As storage engine row locks are skipped for ACL table, it may not have same effect on source and replica.
Known Causes
3 known causesDML/DDL Dependent on ACL Read
A Data Manipulation Language (DML) or Data Definition Language (DDL) statement attempts to modify data based on information retrieved from an ACL (Access Control List) table.
Unsafe Replication Environment
In a replication setup, MySQL flags such statements as unsafe because ACL tables skip storage engine row locks, potentially leading to inconsistent data between the source and replica servers.
Implicit ACL Table Interaction
The DML/DDL statement might implicitly interact with ACL tables through views, stored procedures, or complex subqueries, triggering this safety mechanism.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service