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https://issues.apache.org/jira/browse/FLINK-36245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Qingsheng Ren resolved FLINK-36245.
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Resolution: Fixed
> Remove legacy SourceFunction / SinkFunction / Sink V1 API and deprecated
> method/interface in Sink V2 in 2.0
> -----------------------------------------------------------------------------------------------------------
>
> Key: FLINK-36245
> URL: https://issues.apache.org/jira/browse/FLINK-36245
> Project: Flink
> Issue Type: Technical Debt
> Components: Connectors / Common
> Reporter: Qingsheng Ren
> Assignee: LvYanquan
> Priority: Major
> Labels: 2.0-related, pull-request-available
> Fix For: 2.0-preview
>
>
> SourceFunction, SinkFunction and Sink V1 API has been marked as deprecated
> and should be removed in Flink 2.0.
> Considering SourceFunction / SinkFunction are heavily used in test cases for
> building a simple data generator or a data validator, it could be a huge
> amount of work to rewrite all these usages with Source and Sink V2 API. A
> viable path for 2.0-preview version would be:
> * Move SourceFunction, SinkFunction to an internal package, as a test util
> * Rewrite all Sink V1 implementations with Sink V2 directly (the usage of
> Sink V1 is low in the main repo)
> As a long term working item, all usages of SourceFunction and SinkFunction
> will be replaced by Source and Sink API.
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