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https://issues.apache.org/jira/browse/FLINK-18231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17130313#comment-17130313
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Dawid Wysakowicz commented on FLINK-18231:
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I don't think it is enough to just rename those classes. As far as I remember
there is also the problem that you cannot have multiple kafka dependencies in a
single jar, as classes there also clash.
> flink kafka connector exists same qualified class name, whch will cause
> conflicts when user has all the versions of flink-kafka-connector
> ------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-18231
> URL: https://issues.apache.org/jira/browse/FLINK-18231
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Kafka
> Affects Versions: 1.11.0
> Reporter: jackylau
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0
>
>
>
> There are 0.9/0.10/0.11/2.x four version of kafka connector in 1.11
> There are 0.10/0.11/2.x three version of kafka connector in 1.12-snapshot
> But flink kafka connector exists same qualified class name such as
> KafkaConsumerThread and Handover whch will cause conflicts when i have all
> the versions of flink-kafka-connector.
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