alamb commented on PR #7401:
URL: 
https://github.com/apache/arrow-datafusion/pull/7401#issuecomment-1714287336

   > Unfortunately, all these does not yet fix the GROUP BY OOM issue yet, and 
I am focusing on reproducing and fixing that end-to-end and verifying if the 
conversion back to dict is not causing any issues.
   
   I think you may find that 
https://github.com/apache/arrow-datafusion/pull/7192 will reduce the memory 
required for the group by query significantly
   
   I don't expect that this PR will reduce the requirements for that much


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