Hi team,
The issue arises because Unity Catalog's SYNC command cannot process tables that were created using the Hive SerDe format in the hive_metastore catalog. This means that any attempts to upgrade such tables will fail.
You need to convert your Hive SerDe tables to Delta format using the following command:
CONVERT TO DELTA hive_metastore.<database-name>.<table-name>;
Then after converting the table to Delta format, you can issue the SYNC command to upgrade the table to Unity Catalog using:
SYNC hive_metastore.<database-name>.<table-name> TO unity_catalog.<database-name>.<table-name>;
Let me know if this helps!