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https://issues.apache.org/jira/browse/FLINK-36648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17902317#comment-17902317
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Thomas Cooper commented on FLINK-36648:
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I assume, as a minimum, we need to remove all the usages of SourceFunction, 
SinkFunction and Sink V1 API (as per 
[FLINK-36245|https://issues.apache.org/jira/browse/FLINK-36245]).

>From a quick search, it looks like most/all usages are in classes that have 
>been deprecated for a while. 

In general there are a lot of deprecated classes. The docs say that the 
{{FlinkKafkaConsumer}}  and {{FlinkKafkaProducer}} were supposed to be removed 
in 1.17 and 1.15 respectively, but they are still there.

I wonder if it would make sense to first remove all deprecated classes and then 
do the 2.0-preview work? 

That would probably mean a 4.0 release for the kafka connector?

> Release flink-connector-kafka v4.0.0 for Flink 2.0
> --------------------------------------------------
>
>                 Key: FLINK-36648
>                 URL: https://issues.apache.org/jira/browse/FLINK-36648
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Connectors / Kafka
>    Affects Versions: 2.0.0, 2.0-preview
>            Reporter: Yanquan Lv
>            Priority: Major
>             Fix For: 2.0-preview
>
>
> Flink now already have a release for 2.0-preview1 version, Kafka, as one of 
> the most commonly used connectors, needs to be bump to this version as soon 
> as possible for users and developers to use.



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