andygrove opened a new issue, #708:
URL: https://github.com/apache/datafusion-comet/issues/708

   ### What is the problem the feature request solves?
   
   Spark's `ColumnarToRowExec` can be very slow in some cases. This plan shows 
that C2R took 8 minutes wven though the underlying scan only took 20 seconds. 
This example is selecting decimal columns, so this is related to 
https://github.com/apache/datafusion-comet/issues/670 and 
https://github.com/apache/datafusion-comet/issues/679, but implementing a 
native version of `ColumnarToRowExec` may help with this.
   
   ![image 
(3)](https://github.com/user-attachments/assets/cdb035bb-04fe-4fc0-a744-0fc209de23b2)
   
   
   
   ### Describe the potential solution
   
   _No response_
   
   ### Additional context
   
   _No response_


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