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https://issues.apache.org/jira/browse/FLINK-24622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Paul closed FLINK-24622.
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Resolution: Cannot Reproduce
> Unified sources do not close scheduled threads from
> SplitEnumeratorContext#callAsync()
> --------------------------------------------------------------------------------------
>
> Key: FLINK-24622
> URL: https://issues.apache.org/jira/browse/FLINK-24622
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Common, Runtime / Coordination
> Affects Versions: 1.14.0, 1.13.2, 1.15.0
> Reporter: Mason Chen
> Priority: Major
>
> From user mailing list:
> I was wondering how to cancel a task that is enqueued by the callAsync()
> method, the one that takes in a time interval. For example, the KafkaSource
> uses this for topic partition discovery. It would be straightforward if the
> API returned the underlying future so that a process can cancel it.
> For Kafka, the enumerator shutdown seems to be unclean since it only closes
> the admin client and kafka consumer but not the topic partition discovery
> task. Furthermore, exceptions from that task will cause job failure and can
> potentially happen if the task is still running with the admin client closed.
> How can we address this?
> This seems to be a bug with the current KafkaSource and also the unified
> Sources in general. Can you open a bug ticket in jira? I think the enumerator
> should take of first joining all the async threads before closing the
> enumerator.
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