andygrove opened a new issue, #1523:
URL: https://github.com/apache/datafusion-comet/issues/1523

   ### Describe the bug
   
   During benchmarking, I find that TPC-H q4 "hangs" indefinitely in the 
sort-merge join when there is not much memory allocated. I would expect the 
operator to be slow and spill but it seems to be in some kind of deadlock 
situation instead, with the stats never changing except for the "total time for 
joining".
   
   
![Image](https://github.com/user-attachments/assets/89b69c53-fac0-40a9-9e51-0cac59843160)
   
   ### Steps to reproduce
   
   _No response_
   
   ### Expected behavior
   
   _No response_
   
   ### Additional context
   
   _No response_


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