Error
Error Code:
1753
MySQL Error 1753: Feature Unsupported in Multi-Threaded Replica
Description
MySQL Error 1753 indicates that a specific SQL statement, function, or operation is not compatible with a replica server configured for multi-threaded replication (MTA). This error occurs when the replica attempts to apply an event from the primary that cannot be safely processed in parallel by multiple worker threads, potentially leading to data inconsistency.
Error Message
[Feature/Statement] is not supported in multi-threaded replica mode. [Additional context]
Known Causes
4 known causesUnsupported DDL Statement
Certain Data Definition Language (DDL) statements, such as specific `ALTER TABLE` algorithms or temporary table operations, are incompatible with multi-threaded replica mode.
Incompatible Built-in Function/Operation
Some MySQL functions or operations inherently require a single-threaded application context and cannot be safely executed or replicated in parallel.
Replication Configuration Mismatch
The replica is configured for parallel application of events (`replica_parallel_workers > 0`), but the primary executed an operation not safe for MTA.
Outdated MySQL Version
Older MySQL versions have more limitations on which operations are compatible with multi-threaded replication, leading to this error.
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