<p>Error 1750 occurs when MySQL cannot switch the replication metadata repository between FILE and TABLE formats.</p>
<p>MySQL Error 1750: ER_CHANGE_RPL_INFO_REPOSITORY_FAILURE happens when the server fails to convert replication metadata while changing the rpl_info_repository setting. Check privileges, verify the mysql.* replication tables, and retry the CHANGE REPLICATION SOURCE or SET GLOBAL command after stopping replication.</p>
Failure while changing the type of replication
Error 1750 is raised when MySQL fails to change the replication repository type from FILE to TABLE, or vice versa, after a user issues CHANGE MASTER TO, CHANGE REPLICATION SOURCE TO, or sets rpl_info_repository.
The server must migrate relay log, master info, and worker info from files to the mysql.slave_* tables or back. If this conversion cannot complete, it throws ER_CHANGE_RPL_INFO_REPOSITORY_FAILURE and replication remains stopped.
The error surfaces immediately after running SET GLOBAL rpl_info_repository=TABLE or FILE, or during server startup if the configuration defines an unsupported repository state. It can also appear during an upgrade where repository tables are missing or corrupted.
Replication will not start until the repository switch succeeds. Delayed replication can cause data lag, stale read replicas, and application outages. Prompt remediation protects data consistency across clusters.
Missing or corrupted mysql.slave_master_info, mysql.slave_relay_log_info, or mysql.slave_worker_info tables force the migration to fail.
Insufficient FILE privilege or read only file system prevents MySQL from writing or reading the file based repositories during conversion.
Disk space exhaustion or permission problems in the datadir block creation or update of repository files or tables.
Version mismatch occurs when a MySQL upgrade introduces new columns that do not exist in older table definitions.
Always stop replication before making changes, verify tables exist, grant correct privileges, and then retry the repository switch. Use the SQL examples below for a guided repair.
If tables are missing, recreate them with mysql_upgrade or create the mysql schema tables manually using the scripts from your MySQL version.
If files are unreadable, move or delete the old *.info files after taking backups and let MySQL regenerate them.
After a failed upgrade, run mysql_upgrade to adjust table structures and retry SET GLOBAL rpl_info_repository.
Keep backup copies of the mysql.slave_* tables and the *info files before any configuration change.
Test repository conversion in staging before touching production replicas.
Ensure the MySQL service account has full read/write on the datadir and the mysql system schema.
Error 1201: ER_SLAVE_FATAL_ERROR - triggered by fatal slave issues, often following repository failures. Verify error log and restart replication.
Error 1205: ER_MASTER_INFO - indicates missing master info file. Recreate repository tables or files and issue CHANGE MASTER TO.
If the system tables that store replication metadata are absent or damaged, the conversion fails.
The MySQL OS user cannot read or write the relay-log.info, master.info, or worker.info files.
Lack of free space prevents MySQL from creating new repository entries.
Schema differences between MySQL versions block table alterations required during migration.
A critical replication failure that stops the slave process. Review the error log and reconfigure replication.
Raised when master.info is missing or unreadable. Rebuild repository files or migrate to table repository.
Occurs when the replica cannot read the master's binary log. Verify network connectivity and binlog files.
Run SHOW VARIABLES LIKE 'rpl_info_repository'. The value will be FILE or TABLE.
No. You must STOP SLAVE first to guarantee metadata consistency.
The MySQL user needs ALTER and INSERT on the mysql system schema plus FILE access to create tables.
Yes. Galaxy's query editor highlights replication variables and offers one-click snippets to check repository status, reducing configuration mistakes.
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