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https://issues.apache.org/jira/browse/FLINK-25822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Fedulov updated FLINK-25822:
--------------------------------------
    Description: 
The {_}Source{_}- and _SinkFunction_ interfaces are going to be deprecated with 
the adoption of the new _Source_ and _Sink_ Interfaces. Currently, the 
_Source/SinkFunction_ interfaces are used as main testing facilities for 
internal purposes. New utilities based on the new interfaces have to be 
developed and existing tests migrated to them.

Example: _SinkFunctionProvider_ used in _TestValuesTableFactory_

  was:
The Source- and SinkFunction interfaces are going to be deprecated with the 
adoption of the new Source and Sink Interfaces. Currently, the 
Source/SinkFunction interfaces are used as main testing facilities for internal 
purposes. New utilities based on the new interfaces have to be developed and 
existing tests migrated to them.

Example: _SinkFunctionProvider_ used in _TestValuesTableFactory_


> Migrate away from using Source- and SinkFunctions for internal tests
> --------------------------------------------------------------------
>
>                 Key: FLINK-25822
>                 URL: https://issues.apache.org/jira/browse/FLINK-25822
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / DataStream, Table SQL / API, Tests
>            Reporter: Alexander Fedulov
>            Priority: Major
>
> The {_}Source{_}- and _SinkFunction_ interfaces are going to be deprecated 
> with the adoption of the new _Source_ and _Sink_ Interfaces. Currently, the 
> _Source/SinkFunction_ interfaces are used as main testing facilities for 
> internal purposes. New utilities based on the new interfaces have to be 
> developed and existing tests migrated to them.
> Example: _SinkFunctionProvider_ used in _TestValuesTableFactory_



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