malinjawi commented on PR #12821:
URL: https://github.com/apache/gluten/pull/12821#issuecomment-5438325907

   > @malinjawi does this fixes Delta column mapping? I noticed several tests 
are now passing, I suspect because of this change
   
   Yes @felipepessoto it looks like this fixed a subset of Delta column-mapping 
cases. The change is generic rather than Delta-specific: nested Substrait 
references now preserve their ordinals instead of resolving children by name. 
That also handles renamed or reordered nested Delta fields correctly. The 
nightly run confirmed 32 previously failing tests now pass. I wouldn’t describe 
it as fixing all Delta column mapping, though.


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