clownxc opened a new pull request, #40638:
URL: https://github.com/apache/spark/pull/40638

   What changes were proposed in this pull request?
   Add an override to BatchScanExecBase which delegates to a new default method 
on PartitionReaderFactory to expose vectoryTypes.
   
   Why are the changes needed?
   SparkPlan's vectorType's attribute can be used to specialize codegen however 
BatchScanExecBase does not override this so we DSv2 sources do not get any 
benefit of concrete class dispatch.
   
   Does this PR introduce any user-facing change?
   NO
   
   How was this patch tested?
   Pass GitHub Actions
   


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