Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/16797
ok if we think we should support tables created by hive(or other systems)
even the data schema mismatches the table schema(and matches if lowercased),
I'm ok to fall back to schema inference when reading.
> Incidentally, what happens when a program outside of Spark (such as Hive)
updates the Hive metastore schema of a table with the embedded Spark SQL schema?
I think we will have a bug. But this is not a regression right?
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