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https://issues.apache.org/jira/browse/FLINK-9390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16478931#comment-16478931
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Triones Deng commented on FLINK-9390:
-------------------------------------
[~srichter] Could you please kindly let me konw how to reproduce this issue?
> Shutdown of KafkaProducer causes confusing log message
> ------------------------------------------------------
>
> Key: FLINK-9390
> URL: https://issues.apache.org/jira/browse/FLINK-9390
> Project: Flink
> Issue Type: Bug
> Components: Kafka Connector
> Affects Versions: 1.5.0, 1.6.0
> Reporter: Stefan Richter
> Priority: Minor
>
> I found some logged exceptions in a user log that occurred during shutdown in
> the context of the Kafka Producer. Those exceptions are most certainly not a
> real problem, but can be confusing to users, so maybe we can get rid of them.
> {code}
> 2018-05-16 08:52:16,526 DEBUG
> org.apache.flink.streaming.api.operators.async.Emitter - Emitter thread got
> interrupted, shutting down.
> 2018-05-16 08:52:16,527 ERROR
> org.apache.flink.streaming.runtime.tasks.StreamTask - Error during disposal
> of stream operator.
> org.apache.kafka.common.KafkaException: Failed to close kafka producer
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:734)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:682)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:661)
> at
> org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducerBase.close(FlinkKafkaProducerBase.java:319)
> at
> org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:43)
> at
> org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:117)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:479)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:384)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:703)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.InterruptedException
> at java.lang.Object.wait(Native Method)
> at java.lang.Thread.join(Thread.java:1260)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:703)
> ... 9 more
> {code}
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