lianetm commented on code in PR #18702:
URL: https://github.com/apache/kafka/pull/18702#discussion_r1939721414


##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/AsyncKafkaConsumer.java:
##########
@@ -1326,7 +1331,7 @@ private void close(Duration timeout, boolean 
swallowException) {
         // We are already closing with a timeout, don't allow wake-ups from 
here on.
         wakeupTrigger.disableWakeups();
 
-        final Timer closeTimer = time.timer(timeout);
+        final Timer closeTimer = createTimer(timeout);

Review Comment:
   not introduced here but affected with this change. I notice that 
`runRebalanceCallbacksOnClose` consumes time from the close timeout, right? 
(receives the timer just to update it). But that behaviour is not the same in 
the Classic Consumer. 
   
   In the classic, the close timeout only applies to requests really. The 
callbacks run when closing the Abstract coordinator, without time boundaries, 
and most importantly, without  consuming time from the close timeout. We 
`runRebalanceCallbacksOnClose` without time boundaries too, but it does consume 
the time from the timeout param, right? Wouldn't that potentially leave less 
time for the following requests? I'm concerned about existing apps, running 
callbacks, calling close with a timeout that used to be "enough", but now it 
may not be. Should we simply remove the timer from the 
runRebalanceCallbacksOnClose? 



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