andygrove opened a new issue, #1449:
URL: https://github.com/apache/datafusion-comet/issues/1449

   ### Describe the bug
   
   As demonstrated in unit tests added in 
https://github.com/apache/datafusion-comet/pull/1440, we are allocating ~100kb 
for a batch when the actual memory used in less than 10kb.
   
   ```
   assert_eq!(8376, batch.get_array_memory_size());
   assert_eq!(106496, buffer.reservation.size());
   ```
   
   Rather than use the current `slot_size` logic that produces an estimate 
based on schema, it would be more accurate to estimate memory size based on the 
memory used by the incoming batches.
   
   ### Steps to reproduce
   
   _No response_
   
   ### Expected behavior
   
   _No response_
   
   ### Additional context
   
   _No response_


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