Hi community,
I have read a blog named <<A Journey to Beating Flink's SQL Performance>> [1], which says enabling object reuse can greatly improve performance of Blink Planner. But as I see in the code (v1.14), there’s few occurrences of controllable object reusing in Flink SQL-related modules. What’s more, when enabling object reuse, the planner deep-copies the objects (e.g. in `CommonExecLookupJoin`), which is just opposite to the shallow-copy behavior in DataStream API. The generated code is always the same, regardless of the setting. Am I missing something? Or the behavior changed during version update? Many thanks. [1] https://www.ververica.com/blog/a-journey-to-beating-flinks-sql-performance
