jduo commented on issue #36912:
URL: https://github.com/apache/arrow/issues/36912#issuecomment-1787785531

   While working on another issue, it looks as though the driver evaluates 
FlightStream#getRoot()#getRowCount() > 0 as a stopping condition rather than 
evaluating FlightStream#next() or FlightStream#hasRoot().
   
   
https://github.com/apache/arrow/blob/66844e9f16e9cf26bd5d260de9150973f94f4d5a/java/flight/flight-sql-jdbc-core/src/main/java/org/apache/arrow/driver/jdbc/utils/FlightStreamQueue.java#L106


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