dongjoon-hyun opened a new pull request #29930:
URL: https://github.com/apache/spark/pull/29930


   ### What changes were proposed in this pull request?
   
   This PR aims to upgrade Apache ORC to 1.5.12.
   
   ### Why are the changes needed?
   
   This brings us the latest bug patches like the followings.
   - ORC-644 nested struct evolution does not respect to 
orc.force.positional.evolution
   - ORC-667 ositional mapping for nested struct types should not applied by 
default
   
   ### Does this PR introduce _any_ user-facing change?
   
   No.
   
   ### How was this patch tested?
   
   Pass the CI.


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