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https://issues.apache.org/jira/browse/KAFKA-6621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16526416#comment-16526416
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Matthias J. Sax commented on KAFKA-6621:
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Ticket is not resolved, so yes, it's still an issue :) Feel free to pick it up.
> Update Streams docs with details for UncaughtExceptionHandler
> -------------------------------------------------------------
>
> Key: KAFKA-6621
> URL: https://issues.apache.org/jira/browse/KAFKA-6621
> Project: Kafka
> Issue Type: Improvement
> Components: documentation, streams
> Reporter: Matthias J. Sax
> Priority: Minor
>
> We should update the docs to explain that calling {{KafkaStreams#close()}}
> within the UncaughtExceptionHandler-callback might result in a deadlock and
> one should always specify a timeout parameter for this case.
> As an alternative to avoid the deadlock, setting a flag in the handler and
> calling {{#close}} outside of the callback should also work.
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