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https://issues.apache.org/jira/browse/FLINK-29153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17599325#comment-17599325
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Xingbo Huang commented on FLINK-29153:
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https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=40616&view=logs&j=9c5a5fe6-2f39-545e-1630-feb3d8d0a1ba&t=99b23320-1d05-5741-d63f-9e78473da39e
> KafkaConsumerThread should catch WakeupException when committing offsets
> ------------------------------------------------------------------------
>
> Key: FLINK-29153
> URL: https://issues.apache.org/jira/browse/FLINK-29153
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kafka
> Affects Versions: 1.16.0
> Reporter: Qingsheng Ren
> Assignee: Qingsheng Ren
> Priority: Critical
> Fix For: 1.16.0
>
>
> {{KafkaConsumerThread}} in the legacy {{FlinkKafkaConsumer}} makes a wakeup
> on the {{KafkaConsumer}} on offset commit to wakeup the potential blocking
> {{KafkaConsumer.poll()}}. However the wakeup might happen when the consumer
> is not polling. The wakeup will be remembered by the consumer and re-examined
> while committing the offset asynchronously, which leads to an unnecessary
> {{WakeupException}}.
> As the JavaDoc and method signature of KafkaConsumer does not show that the
> WakeupException could be thrown in KafkaConsumer#commitAsync, this could be
> considered as a bug on Kafka side (breaking the contract of public API), but
> we can still fix it by catching the WakeupException and retrying.
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