Error
Error Code:
3100
MySQL Error 3100: Replication Hook Failure on Observer
Description
Error 3100 indicates a failure when a MySQL observer server attempts to execute a replication hook. This typically occurs in a Group Replication or similar environment where custom logic is triggered during replication events, and the hook's execution encounters an issue.
Error Message
Error on observer while running replication hook '%s'.
Known Causes
4 known causesMalformed Replication Hook Script
The custom script or plugin configured as a replication hook contains syntax errors, logical bugs, or throws unhandled exceptions during execution.
Insufficient Permissions for Hook
The MySQL user account or the operating system user under which the replication hook executes lacks the required file system or database privileges.
Observer Resource Exhaustion
The observer server experiences high CPU, insufficient memory, or low disk space, preventing the replication hook from completing its operations successfully.
External Dependency Unavailability
The replication hook depends on an external file, network service, or database that is currently inaccessible or misconfigured.
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