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https://issues.apache.org/jira/browse/FLINK-9287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Piotr Nowojski reassigned FLINK-9287:
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Assignee: Piotr Nowojski
> KafkaProducer011 seems to leak threads when not in exactly-once mode
> --------------------------------------------------------------------
>
> Key: FLINK-9287
> URL: https://issues.apache.org/jira/browse/FLINK-9287
> Project: Flink
> Issue Type: Bug
> Components: Kafka Connector
> Affects Versions: 1.5.0, 1.4.2
> Reporter: Christopher Ng
> Assignee: Piotr Nowojski
> Priority: Blocker
> Fix For: 1.5.0
>
>
> {{KafkaProducer011}} appears to be leaking {{kafka-producer-network-thread}}
> threads. As far as I can tell it happens when it is not in EXACTLY_ONCE
> mode, it seems that it creates a {{FlinkKafkaProducer}} but never closes it,
> even when the {{FlinkKafkaProducer011}} itself is closed.
> I observed this when running a local cluster and submitting and then
> cancelling a job, a lot of kafka threads were left alive afterwards.
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