topic Re: Unable to restore table version after enabling columnMapping in Data Engineering

Unable to restore table version after enabling columnMapping

Data_Alchemist — Mon, 02 Sep 2024 12:51:18 GMT

i can not restore my delta table to a previous version after I have enabled columnMapping.

The following error is shown:

DeltaColumnMappingUnsupportedException: Changing column mapping mode from 'name' to 'none' is not supported.

Any idea how to roll back?

szymon_dybczak — Mon, 02 Sep 2024 12:55:44 GMT

In Databricks Runtime 15.3 and above, you can use the DROP FEATURE command to remove column mapping from a table and downgrade the table protocol.

Then you can try to restore table to previous version.