Error
Error Code:
1520
MariaDB Error 1520: Invalid Range Partition Reorganization
Description
MariaDB Error 1520 indicates an attempt to reorganize `RANGE` partitions in a way that alters the fundamental structure of the partition ranges. This error is raised when an `ALTER TABLE ... REORGANIZE PARTITION` statement tries to change the total number of defined ranges or modify an existing range boundary, except for extending the `VALUES LESS THAN` boundary of the *last* partition.
Error Message
Reorganize of range partitions cannot change total ranges except for last partition where it can extend the range
Known Causes
4 known causesDecreasing Partition Count
This occurs when an `ALTER TABLE ... REORGANIZE PARTITION` statement attempts to merge multiple range partitions into a fewer number of partitions.
Increasing Partition Count
The error is raised if you try to split an existing range partition into two or more new partitions, thereby increasing the total partition count.
Modifying Intermediate Range Boundaries
Changing the upper limit (`VALUES LESS THAN`) for any partition that is not the very last partition in the range partitioning scheme will trigger this error.
Incorrect Range Definition
The new `VALUES LESS THAN` definitions for the reorganized partitions do not maintain the original logical range structure or overlap with existing ranges in an invalid way.
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