sunjincheng commented on FLINK-5792:

BYW, when I implement the issue, I had try to use `kryo` serialize&deserialize 
the UDTF/UDF object, It will make byte [] very small.
But unfortunately, It asked the serialized member must have a zero-parameter 
constructor which not friendly to user.

> Improve “UDF/UDTF" to support constructor with parameter.
> ---------------------------------------------------------
>                 Key: FLINK-5792
>                 URL: https://issues.apache.org/jira/browse/FLINK-5792
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: sunjincheng
>            Assignee: sunjincheng
> Currently UDF/UDTF in the codegen phase using a nonparametric constructor to 
> create the instance, causing the user can not include the state value in the 
> UDF/UDTF. The UDF/UDTF's codegen phase can use a serialized mechanism so that 
> the UDTF can contain state values.
> 1. UserDefinedFunction inherits Serializable.
> 2. Modify CodeGenerator about UDF/UDTF part.
> 3. Modify TableAPI about UDF/UDTF
> 4. Add Test.

This message was sent by Atlassian JIRA

Reply via email to