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Posted to issues@flink.apache.org by "Rong Rong (JIRA)" <ji...@apache.org> on 2018/06/01 00:48:00 UTC
[jira] [Created] (FLINK-9484) Improve generic type inference for
User-Defined Functions
Rong Rong created FLINK-9484:
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Summary: Improve generic type inference for User-Defined Functions
Key: FLINK-9484
URL: https://issues.apache.org/jira/browse/FLINK-9484
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Reporter: Rong Rong
Assignee: Rong Rong
User-defined function has been a great extension for Flink SQL API to support much complex logics.
We experienced many inconvenience when dealing with UDF with generic types and are summarized in the following [doc|https://docs.google.com/document/d/1zKSY1z0lvtQdfOgwcLnCMSRHew3weeJ6QfQjSD0zWas/edit?usp=sharing].
We are planning to implement the generic type inference / functioncatalog look up in multiple phases. Detail tickets will be created.
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