Github user viirya commented on the issue:
https://github.com/apache/spark/pull/14365
@cloud-fan @yhuai @dongjoon-hyun I've updated this as:
* Assume metastore schema matches with physical Orc schema by column,
disregarding column names.
* Mapping required schema to columns in physical Orc schema.
* If the length or data types of metastore schema and physical schema is
not matched, throw an exception suggesting users to disable
`spark.sql.hive.convertMetastoreOrc`.
Please let me know what you think about this approach. Thanks.
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