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Posted to issues@flink.apache.org by "Timo Walther (Jira)" <ji...@apache.org> on 2020/12/07 16:16:00 UTC

[jira] [Created] (FLINK-20522) Make implementing a built-in function straightforward

Timo Walther created FLINK-20522:
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             Summary: Make implementing a built-in function straightforward
                 Key: FLINK-20522
                 URL: https://issues.apache.org/jira/browse/FLINK-20522
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / API, Table SQL / Planner
            Reporter: Timo Walther
            Assignee: Timo Walther


FLIP-65 has introduced new abstractions for functions. They make implementing user-defined functions straightforward. However, currently, these abstraction are not available for built-in functions. Adding a built-in function requires many changes at different locations as shown in FLINK-6810. This is error-prone, limits contributions, and is also not well supported by the current module system.



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