Error
Error Code:
4136
MySQL Error 4136: External Transfer Failure
Description
This error indicates that MySQL's bulk reader component encountered an issue while attempting to use the `libcurl` library. It typically occurs during operations that involve transferring data to or from an external source over a network, such as loading data from cloud storage or other remote services. The `%s` placeholder will be replaced by a specific `libcurl` error message, providing more context about the underlying network or transfer problem.
Error Message
Bulk reader got libcurl error: %s
Known Causes
4 known causesNetwork Unreachability
The MySQL server cannot establish a network connection to the external data source required for bulk operations.
Invalid Target URL
The URL or path to the external data source is malformed, incorrect, or points to a non-existent location.
Outbound Connection Blocked
Firewalls, security groups, or proxy settings are preventing the MySQL server from reaching the external endpoint.
Certificate Validation Error
`libcurl` failed to validate the SSL/TLS certificate of the external server, often due to untrusted, expired, or incorrect certificates.
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