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https://issues.apache.org/jira/browse/KAFKA-19891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18046570#comment-18046570
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Christo Lolov commented on KAFKA-19891:
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Heya, this isn't marked as a blocker for 4.2 and we are past the code freeze
date! What is the state of implementation, is it a blocker, is it nearly done
or should I be moving it to the 4.3 release :)?
> AsyncKafkaConsumer logs "Unexpected exception" for timeouts during close
> ------------------------------------------------------------------------
>
> Key: KAFKA-19891
> URL: https://issues.apache.org/jira/browse/KAFKA-19891
> Project: Kafka
> Issue Type: Bug
> Components: clients, consumer
> Reporter: Lucas Brutschy
> Assignee: Anton Vasanth
> Priority: Minor
> Fix For: 4.2.0
>
>
> The new consumer (in share, consumer and streams groups) log "unexpected
> exception" at error log level when hitting a timeout during consumer close:
> [https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/consumer/internals/AbstractHeartbeatRequestManager.java#L318]
> [https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/clients/consumer/internals/StreamsGroupHeartbeatRequestManager.java#L489]
> This is confusing, since this is not really unexpected, and should probably
> be logged at warn level at most.
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