Github user owen-hortonworks commented on the issue:
https://github.com/apache/orc/pull/190
Unfortunately, this would break the non-sql clients. Looking more into
Hive's behavior, it currently does:
* lowercases all column names
* preserves all struct field names
That makes a mess. I'd propose that we add a new option for readers that
makes schema evolution lowercase everything and Hive should always set that
option.---
