chia7712 commented on code in PR #20758:
URL: https://github.com/apache/kafka/pull/20758#discussion_r2483976728
##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/ShareConsumerImpl.java:
##########
@@ -609,6 +609,15 @@ public synchronized ConsumerRecords<K, V> poll(final
Duration timeout) {
throw e.cause();
} finally {
kafkaShareConsumerMetrics.recordPollEnd(timer.currentTimeMs());
+
+ // Handle any acknowledgements which completed while we were
waiting, but do not throw
+ // the exception because the fetched records would then not be
returned to the caller
+ try {
+ handleCompletedAcknowledgements(false);
+ } catch (Throwable t) {
+ log.warn("Exception thrown in acknowledgement commit
callback", t);
+ }
Review Comment:
@TaiJuWu thanks for this find. The flaky behaviour and its root cause have
already been logged in https://issues.apache.org/jira/browse/KAFKA-19840
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