Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/19571
> What is the backward compatibility of ORC 1.4.1? Can we create multiple
ORC files created by the previous versions and ensure they are not broken?
That a good point, and I think it's better to have these tests in the orc
project. If they don't have, then we can take over and add these tests.
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