alamb commented on issue #6412:
URL: https://github.com/apache/arrow-rs/issues/6412#issuecomment-2359281402

   I don't know of any, but it wouldn't surprise me if something optimized away 
the sending of empty record batchs 
   
   I would first recommend verifying that the output of the stream from 
datafusion actually has the empty record batch
   
   Perhaps you could use 
https://docs.rs/futures/latest/futures/prelude/stream/trait.StreamExt.html#method.inspect
 and print out hte batches coming out of DataFusion 🤔 


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