wirybeaver commented on issue #12080:
URL: https://github.com/apache/pinot/issues/12080#issuecomment-1854764439

   disk spill: currently the num of group limit is used to avoid OOM and the 
return result is not accurate. Enable disk spill can get deterministic result. 
The Apache Druid / Doris and Velox already support disk based group by.
   parallel combine: speed up the combine process
   @chenboat 
   
   


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