Daniel Dai commented on PIG-5256:

Haven't checked the code line by line, but the overall approach looks good to 
me. The patch flattened expression tree and nested plan, so we can avoid 
virtual function call, and have a cleaner solution for multi-time evaluation 
issue. This can be extended to flatten the whole operator tree in the future 
(whole stage codegen).

> Bytecode generation for POFilter and POForeach
> ----------------------------------------------
>                 Key: PIG-5256
>                 URL: https://issues.apache.org/jira/browse/PIG-5256
>             Project: Pig
>          Issue Type: Sub-task
>          Components: impl
>            Reporter: Rohini Palaniswamy
>            Assignee: Rohini Palaniswamy
>             Fix For: 0.18.0

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