juliuszsompolski commented on code in PR #49370:
URL: https://github.com/apache/spark/pull/49370#discussion_r1913334809


##########
sql/connect/server/src/main/scala/org/apache/spark/sql/connect/execution/ExecuteGrpcResponseSender.scala:
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@@ -319,7 +325,14 @@ private[connect] class ExecuteGrpcResponseSender[T <: 
Message](
           log"waitingForResults=${MDC(WAIT_RESULT_TIME, consumeSleep / 
NANOS_PER_MILLIS.toDouble)} ms " +
           log"waitingForSend=${MDC(WAIT_SEND_TIME, sendSleep / 
NANOS_PER_MILLIS.toDouble)} ms")
         // scalastyle:on line.size.limit
-        grpcObserver.onCompleted()
+        if (executionCompleted && !sizeLimitReached) {

Review Comment:
   I see (and now fully parsed and remembered the loops here)...
   I guess an `innerLoopEntered` boolean could resolve this.... (and 
appropriate code comment describing the situation)... But it's not elegant.
   Maybe it could be done cleaner on ExecuteResponseObserver side to notice 
that the stream hasn't been closed while executeHolder.isExecutionCompleted?
   
   



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