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Posted to issues@flink.apache.org by "Jingsong Lee (JIRA)" <ji...@apache.org> on 2019/03/18 09:22:00 UTC

[jira] [Created] (FLINK-11951) Enhance UserDefinedFunction interface to allow more user defined types

Jingsong Lee created FLINK-11951:
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             Summary: Enhance UserDefinedFunction interface to allow more user defined types
                 Key: FLINK-11951
                 URL: https://issues.apache.org/jira/browse/FLINK-11951
             Project: Flink
          Issue Type: Improvement
            Reporter: Jingsong Lee
            Assignee: Jingsong Lee


1.Allow UDF & UDTF to access constant parameter values at getReturnType, see similar feature in hive: [https://hive.apache.org/javadocs/r2.2.0/api/org/apache/hadoop/hive/ql/udf/generic/GenericUDF.html#initializeAndFoldConstants-org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector:A-]

2.Allow AggregateFunction to decide its user define inputs types with argClasses.

 



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