westonpace commented on PR #34348:
URL: https://github.com/apache/arrow/pull/34348#issuecomment-1454231356

   These test failures are legimate.  I hacked at this a little today and it 
quickly started to get out of control :laughing: 
   
   The basic issue is that I am transferring to a model where all expressions 
(projections, filters, guarantees) get normalized as we start to work with 
them.  This allows us to cleanly handle duplicate column names and similar 
issues.  Unfortunately, it's exposing a number of places in the current 
datasets code where we are explicitly relying on named refs and I am needing to 
work around that.


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