Error
Error Code:
4018
MySQL Error 4018: Incompatible Replication Settings
Description
This error occurs when a MySQL replication channel is configured with conflicting GTID (Global Transaction Identifier) assignment strategies. Specifically, it indicates an incompatibility between using the `WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS` function and the `ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS` setting on the same replication channel.
Error Message
WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS cannot be used on a channel configured with ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS = LOCAL|<UUID>
Known Causes
3 known causesConflicting GTID Assignment and Wait Strategy
The replication channel is configured to assign GTIDs to anonymous transactions, which is inherently incompatible with waiting for the SQL thread after specific GTIDs.
Misconfigured Replication Channel
A `CHANGE REPLICATION SOURCE TO` or `CHANGE MASTER TO` statement included both `WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS` and `ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS` parameters simultaneously.
Dynamic Replication Setting Conflict
An attempt was made to dynamically alter replication settings, resulting in the conflicting use of `WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS` and `ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS` on an active channel.
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