alamb commented on issue #24768:
URL: https://github.com/apache/datafusion/issues/24768#issuecomment-5551284914

   > 4. One bucket very large while the rest are fine — e.g. one key holding 
90% of the rows
   > nd the floor, stated plainly: if the same key is hot on both sides, the 
join's own outpu...
   
   I will be honest I don't quite understand what this section is saying, but 
it seems like it is saying there are certain cases where the OOM is still 
possible (when both sides have the same large key). Is that right? 
   


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