- Verify the query that caused the error, noting if it specifies a partition or involves a partitioned table.
- Check the MySQL error log for any additional messages related to the error. Use:
SHOW VARIABLES LIKE 'log_error';
Then, review the log file specified in the output for more details.
- Confirm the partitioning scheme of the affected table. Use:
SELECT TABLENAME, PARTITIONNAME, SUBPARTITIONNAME, PARTITIONORDINALPOSITION, SUBPARTITIONORDINALPOSITION, PARTITIONMETHOD, SUBPARTITIONMETHOD, PARTITIONEXPRESSION, SUBPARTITIONEXPRESSION, PARTITIONDESCRIPTION FROM informationschema.partitions WHERE TABLESCHEMA = 'yourdatabasename' AND TABLENAME = 'yourtable_name';
- Verify if the specified partition exists and is accessible. For a quick check of the table's partitions, use:
SHOW CREATE TABLE yourtablename;
- Check the table and partitions for any corruption or issues. Use the MySQL table check command:
CHECK TABLE yourtablename;
- If the operation was trying to insert, update, or delete, ensure the data distribution keys used in the query match the partitioning rules of the table.
- Assess the storage engine status, especially if using NDB for MySQL Cluster, as certain limitations or issues might be specific to the storage engine. Use:
SHOW ENGINE NDB STATUS;
- If the issue persists, consider reorganizing the partitions if the current setup does not align with the query patterns or data distribution. This step involves significant planning and should be approached with caution:
ALTER TABLE yourtablename REORGANIZE PARTITION ...;
