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https://issues.apache.org/jira/browse/FLINK-18231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17130334#comment-17130334
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jackylau commented on FLINK-18231:
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[~dwysakowicz], yes if we just use all the flink kafka connector (i do n't mean 
flink-sql-kafka shade jar), user can not have multiple kafka client, because it 
wll exist conflicts between diffirent kafka client version. But it solve the 
conflict  between  flink kafka connector.

That is to say, user can put all the the flink kafka connector, and replace 
flexibility  with the version of kafka  client they need. (just one kafka 
client in the lib)

> 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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