comphead commented on issue #4718:
URL: 
https://github.com/apache/datafusion-comet/issues/4718#issuecomment-4791185057

   > Do you have any reproduction sql or pipeline code? Thanks!
   
   it comes from internal use case, but the query involves `grouping`, `cube`, 
`agg`, distinct aggregation. the input rows get exploded massively to support 
all dims combinations in memory, perhaps 100x times. Which likely the cause for 
buffer overflow


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