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From "Tzu-Li (Gordon) Tai (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (FLINK-6996) FlinkKafkaProducer010 doesn't guarantee at-least-once semantic
Date Thu, 06 Jul 2017 04:33:00 GMT

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

Tzu-Li (Gordon) Tai resolved FLINK-6996.
----------------------------------------
    Resolution: Fixed

Fixed for master via 0e7a53189991f7615891e9a168c747f43d1b13c3.
Fixed for 1.3 via 6630dfdd748dee9c2fa6a0993497dcf3468a0948.

> 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: 1.3.2
>
>
> 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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