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https://issues.apache.org/jira/browse/FLINK-19099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17187592#comment-17187592
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Danny Chen commented on FLINK-19099:
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Before Flink-15221, the SQL Kafka connector only supports "at least once"
semantic, where the records may duplicate when there are failures. You can use
data stream instead.
> consumer kafka message repeat
> -----------------------------
>
> Key: FLINK-19099
> URL: https://issues.apache.org/jira/browse/FLINK-19099
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream, Connectors / Kafka
> Affects Versions: 1.11.0
> Reporter: zouwenlong
> Priority: Major
>
> when taksmanager be killed ,my job consume some message , but the offset in
> not commit,
> then restart it ,my job consume kafka message repeat, I used checkpoint and
> set 5 seconds ,
> I think this is a very common problem，how to solve this problem？
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