Ruidong Li reassigned FLINK-8921:

    Assignee: Ruidong Li

> Split code generated call expression 
> -------------------------------------
>                 Key: FLINK-8921
>                 URL: https://issues.apache.org/jira/browse/FLINK-8921
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Timo Walther
>            Assignee: Ruidong Li
>            Priority: Major
> In FLINK-8274 we introduced the possibility of splitting the generated code 
> into multiple methods in order to exceed the JVMs maximum method size (see 
> also https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.9).
> At the moment we only split methods by fields, however, this is not enough in 
> all case. We should also split expressions. I suggest to split the operands 
> of a {{RexCall}} in 
> {{org.apache.flink.table.codegen.CodeGenerator#visitCall}} if we reach a 
> certain threshold. However, this should happen as lazily as possible to keep 
> the runtime overhead low.

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