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https://issues.apache.org/jira/browse/FLINK-16258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17180381#comment-17180381
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Timo Walther commented on FLINK-16258:
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This issue is not as straight forward as it seems. The problem we have in our
tests is that many tests use legacy sources and sinks and thus create legacy
types that FLIP-65 functions cannot handle. Feel free to update all calls to
`registerFunctions` that don't affect tests. In order to really solve this
issue entirely, we should have a new test base that uses new sources, new
sinks, ... all new API parts in general.
> Update test utilities to FLIP-65
> --------------------------------
>
> Key: FLINK-16258
> URL: https://issues.apache.org/jira/browse/FLINK-16258
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Reporter: Timo Walther
> Priority: Major
>
> Currently, {{TestingTableEnvironment.registerFunction}} and
> {{TestingTableEnvironment.registerFunction}} are still using the old type
> system.
> This means that most tests still work on the old type system and actually
> don't test real API user-facing behavior.
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