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Posted to issues@flink.apache.org by "Piotr Nowojski (JIRA)" <ji...@apache.org> on 2017/08/02 07:16:00 UTC

[jira] [Closed] (FLINK-6996) FlinkKafkaProducer010 doesn't guarantee at-least-once semantic

     [ https://issues.apache.org/jira/browse/FLINK-6996?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Piotr Nowojski closed FLINK-6996.
---------------------------------
    Resolution: Fixed

Those test failures most likely are not caused by actual bug in Flink, but a intermittent tests. I have created separate issue for fixing those tests: https://issues.apache.org/jira/browse/FLINK-7343 . Closing this issue.

> FlinkKafkaProducer010 doesn't guarantee at-least-once semantic
> --------------------------------------------------------------
>
>                 Key: FLINK-6996
>                 URL: https://issues.apache.org/jira/browse/FLINK-6996
>             Project: Flink
>          Issue Type: Bug
>          Components: Kafka Connector
>    Affects Versions: 1.2.0, 1.3.0, 1.2.1, 1.3.1
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
>            Priority: Blocker
>             Fix For: 1.4.0, 1.3.2
>
>
> FlinkKafkaProducer010 doesn't implement CheckpointedFunction interface. This means, when it's used like a "regular sink function" (option a from [the java doc|https://ci.apache.org/projects/flink/flink-docs-master/api/java/org/apache/flink/streaming/connectors/kafka/FlinkKafkaProducer010.html]) it will not flush the data on "snapshotState"  as it is supposed to.



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