lianetm commented on code in PR #16156:
URL: https://github.com/apache/kafka/pull/16156#discussion_r1624801663


##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/ConsumerNetworkThread.java:
##########
@@ -293,12 +293,10 @@ private void closeInternal(final Duration timeout) {
      * Check the unsent queue one last time and poll until all requests are 
sent or the timer runs out.
      */
     private void sendUnsentRequests(final Timer timer) {
-        if (networkClientDelegate.unsentRequests().isEmpty())
-            return;
-        do {
+        while (timer.notExpired() && 
networkClientDelegate.hasAnyPendingRequests()) {

Review Comment:
   sorry a bit late but one concern: wouldn't this change make that requests 
that are issued with timeout 0 won't be sent out??? My understanding is that 
the expected behaviour for requests with timeout 0 is fire-and-forget, so we 
want to send them at least once. 



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