[GitHub] [arrow-datafusion] poonai opened a new pull request, #3529: Use direct indexing for small sized keys to improve group by aggregation performance

[GitBox]

poonai opened a new pull request, #3529:
URL: https://github.com/apache/arrow-datafusion/pull/3529

   ## Note
   
   will update the description after clean up and verifying the performance 
gain 😅 
   


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