[jira] [Commented] (FLINK-7343) Kafka010ProducerITCase instability

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-7343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16110577#comment-16110577 ] 

ASF GitHub Bot commented on FLINK-7343:
---------------------------------------

Github user NicoK commented on the issue:

    https://github.com/apache/flink/pull/4456
  
    yes, seems like it was changed from `-Xmx800m` to `-Xmx1536m` by FLINK-6128 and again to `-Xmx2048m` by FLINK-7004 without changing it here. The question should rather be whether we need the specialised options anyway or whether we can remove them.
    I tested the latter (removing the `<argLine>...</argLine>` lines but keeping the `<forkCount>1</forkCount>`) and then the root pom's values are inherited which may be a better solution anyway.


> 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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