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https://issues.apache.org/jira/browse/FLINK-3595?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ufuk Celebi closed FLINK-3595.
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Resolution: Fixed
Fixed in 3465580 (master), e0dc5c1 (release-1.0).
> Kafka09 consumer thread does not interrupt when stuck in record emission
> ------------------------------------------------------------------------
>
> Key: FLINK-3595
> URL: https://issues.apache.org/jira/browse/FLINK-3595
> Project: Flink
> Issue Type: Bug
> Components: Kafka Connector
> Affects Versions: 1.0.0
> Reporter: Stephan Ewen
> Assignee: Ufuk Celebi
> Priority: Critical
> Fix For: 1.1.0, 1.0.1
>
>
> When canceling a job, the Kafka 0.9 Consumer Thread may be stuck in a
> blocking method (output emitting) and never wakes up.
> The thread as a whole cannot be simply interrupted, because of a bug in Kafka
> that makes the consumer freeze/hang up on interrupt.
> There are two possible solutions:
> - allow and call interrupt when the consumer thread is emitting elements
> - destroy the output network buffer pools eagerly on canceling. The Kafka
> thread will then throw an exception if it is stuck in emitting elements and
> it will terminate, which is accepted in case the status is canceled.
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