Error
Error Code:
1497
MariaDB Error 1497: Mixed Partition Handlers
Description
MariaDB Error 1497, 'ER_MIX_HANDLER_ERROR', indicates that you are attempting to create or modify a partitioned table where different partitions are assigned different storage engines (handlers). This configuration is not supported in the current version of MariaDB due to architectural constraints. The error prevents the table operation from completing.
Error Message
The mix of handlers in the partitions is not allowed in this version of MariaDB
Known Causes
4 known causesIncompatible MariaDB Version Policy
Your specific MariaDB version strictly requires that all partitions within a single table must utilize the same storage engine. Attempting to define partitions with varying engines will be rejected.
Incorrect Table Definition Syntax
The `CREATE TABLE` or `ALTER TABLE` statement explicitly or implicitly assigns different `ENGINE` clauses to individual partitions of the same table, which is an unsupported configuration.
Migration of Foreign Schema
Importing a partitioned table schema from another database system or an older MySQL/MariaDB version that might have allowed mixed storage engines can trigger this error upon creation.
Implicit Engine Assignment
Sometimes, if no engine is explicitly specified for a partition, the system might try to assign a default that differs from other partitions, leading to an unintended mix.
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