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https://issues.apache.org/jira/browse/FLINK-7343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16118105#comment-16118105
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ASF GitHub Bot commented on FLINK-7343:
---------------------------------------

Github user pnowojski closed the pull request at:

    https://github.com/apache/flink/pull/4470


> Kafka010ProducerITCase instability
> ----------------------------------
>
>                 Key: FLINK-7343
>                 URL: https://issues.apache.org/jira/browse/FLINK-7343
>             Project: Flink
>          Issue Type: Bug
>          Components: Kafka Connector
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
>              Labels: test-stability
>
> As reported by [~till.rohrmann] in 
> https://issues.apache.org/jira/browse/FLINK-6996 there seems to be a test 
> instability with 
> `Kafka010ProducerITCase>KafkaProducerTestBase.testOneToOneAtLeastOnceRegularSink`
> https://travis-ci.org/tillrohrmann/flink/jobs/258538641
> It is probably related to log.flush intervals in Kafka, which delay flushing 
> the data to files and potentially causing data loses on killing Kafka brokers 
> in the tests.



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