lianetm commented on code in PR #15640:
URL: https://github.com/apache/kafka/pull/15640#discussion_r1585035057


##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/AsyncKafkaConsumer.java:
##########
@@ -1853,6 +1824,40 @@ private void subscribeInternal(Collection<String> 
topics, Optional<ConsumerRebal
         }
     }
 
+    /**
+     * Process the events—if any—that were produced by the {@link 
ConsumerNetworkThread network thread}.
+     * It is possible that {@link ErrorEvent an error}
+     * could occur when processing the events. In such cases, the processor 
will take a reference to the first
+     * error, continue to process the remaining events, and then throw the 
first error that occurred.
+     */
+    private boolean process(EventProcessor<BackgroundEvent> processor) {

Review Comment:
   what about renaming this to be explicit about what we process here? It gets 
confusing given that at this consumer level we're dealing with app events and 
background events. 
   
   `processBackgroundEvents` feels pretty clear, and I know there is already 
another one called liked that, but the other one is more about 
`awaitFutureProcessingBackgroundEvents` , because it actually blocks for a 
time, only used from the unsubscribe, so maybe rename here and there?



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