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https://issues.apache.org/jira/browse/FLINK-6996?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16066023#comment-16066023
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ASF GitHub Bot commented on FLINK-6996:
---------------------------------------
GitHub user pnowojski opened a pull request:
https://github.com/apache/flink/pull/4206
[FLINK-6996] FlinkKafkaProducer010 doesn't guarantee at-least-once semantic
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/pnowojski/flink at-least-once
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4206.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #4206
----
commit b05b72a2baab8656787e2020120750e780b37621
Author: Piotr Nowojski <piotr.nowoj...@gmail.com>
Date: 2017-06-26T09:28:51Z
[FLINK-6996] Refactor and automaticall inherit KafkaProducer integration
tests
commit 62b553503964230d8af6d7d79054721060da8061
Author: Piotr Nowojski <piotr.nowoj...@gmail.com>
Date: 2017-06-26T10:20:36Z
[FLINK-6996] Fix formatting in KafkaConsumerTestBase and
KafkaProducerTestBase
commit 34ba4b74f0c5c6b915695ab8bf7bda5b40955d5b
Author: Piotr Nowojski <piotr.nowoj...@gmail.com>
Date: 2017-06-26T10:36:40Z
[FLINK-6996] Fix at-least-once semantic for FlinkKafkaProducer010
Add tests coverage for Kafka 0.10 and 0.9
----
> 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
>
> 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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