Error
Error Code:
4040
MySQL Error 4040: GTID Assignment UUID Conflict
Description
This error signifies a critical configuration conflict in MySQL Group Replication. It occurs when the UUID specified for assigning GTIDs to anonymous transactions unexpectedly matches the UUID reserved for Group Replication view changes, preventing proper GTID assignment.
Error Message
Replication '%s' is configured with ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS = <UUID> where the UUID value is equal to the group_replication_view_change_uuid
Known Causes
3 known causesConflicting UUID Assignment
The `ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS` variable was explicitly configured with a UUID value identical to the `group_replication_view_change_uuid`.
Automated Configuration Error
An automated script or deployment tool inadvertently set the `ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS` UUID to conflict with the Group Replication UUID.
Misunderstanding of UUID Purpose
Lack of awareness regarding the specific purpose and uniqueness requirements for `group_replication_view_change_uuid` led to its accidental reuse.
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