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https://issues.apache.org/jira/browse/KAFKA-14208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17602046#comment-17602046
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Guozhang Wang commented on KAFKA-14208:
---------------------------------------
Hello Qingsheng, thanks for reporting this issue, and I looked at the source
code and agree with you that it was introduced as part of KAFKA-13563. I will
try to fix this with a follow-up PR.
> KafkaConsumer#commitAsync throws unexpected WakeupException
> -----------------------------------------------------------
>
> Key: KAFKA-14208
> URL: https://issues.apache.org/jira/browse/KAFKA-14208
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Affects Versions: 3.2.1
> Reporter: Qingsheng Ren
> Priority: Major
>
> We recently encountered a bug after upgrading Kafka client to 3.2.1 in Flink
> Kafka connector (FLINK-29153). Here's the exception:
> {code:java}
> org.apache.kafka.common.errors.WakeupException
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.maybeTriggerWakeup(ConsumerNetworkClient.java:514)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:278)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:236)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:215)
> at
> org.apache.kafka.clients.consumer.internals.AbstractCoordinator.ensureCoordinatorReady(AbstractCoordinator.java:252)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.coordinatorUnknownAndUnready(ConsumerCoordinator.java:493)
> at
> org.apache.kafka.clients.consumer.internals.ConsumerCoordinator.commitOffsetsAsync(ConsumerCoordinator.java:1055)
> at
> org.apache.kafka.clients.consumer.KafkaConsumer.commitAsync(KafkaConsumer.java:1573)
> at
> org.apache.flink.streaming.connectors.kafka.internals.KafkaConsumerThread.run(KafkaConsumerThread.java:226)
> {code}
> As {{WakeupException}} is not listed in the JavaDoc of
> {{{}KafkaConsumer#commitAsync{}}}, Flink Kafka connector doesn't catch the
> exception thrown directly from KafkaConsumer#commitAsync but handles all
> exceptions in the callback.
> I checked the source code and suspect this is caused by KAFKA-13563. Also we
> never had this exception in commitAsync when we used Kafka client 2.4.1 &
> 2.8.1.
> I'm wondering if this is kind of breaking the public API as the
> WakeupException is not listed in JavaDoc, and maybe it's better to invoke the
> callback to handle the {{WakeupException}} instead of throwing it directly
> from the method itself.
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