Error
Error Code:
3927
MySQL Error 3927: Corrupted PRIVILEGE_CHECKS_USER
Description
This error indicates that the `PRIVILEGE_CHECKS_USER` setting, which defines the user account for privilege checks on the replica, has become invalid or corrupted within the replication configuration. It typically occurs when MySQL attempts to read the replication metadata for a specific channel and finds the `PRIVILEGE_CHECKS_USER` value in an unreadable or malformed state.
Error Message
Invalid, corrupted PRIVILEGE_CHECKS_USER was found in the replication configuration repository for channel '%s'. Use CHANGE REPLICATION SOURCE TO PRIVILEGE_CHECKS_USER to correct the configuration.
Known Causes
4 known causesManual Configuration Tampering
Directly editing internal MySQL replication metadata files, such as `mysql.slave_master_info`, can introduce syntax errors or invalid characters for the `PRIVILEGE_CHECKS_USER`.
Underlying Data Corruption
Corruption at the file system level or within the MySQL data files can damage the replication repository, leading to an unreadable `PRIVILEGE_CHECKS_USER` entry.
Incomplete Configuration Update
An interrupted or improperly executed `CHANGE REPLICATION SOURCE TO` statement might leave the `PRIVILEGE_CHECKS_USER` setting in an inconsistent or partially written state.
Abrupt Server Shutdown
An unexpected power loss or server crash while replication metadata was being written or updated can result in a corrupted `PRIVILEGE_CHECKS_USER` entry.
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