Greg Phillips commented on PIG-5338:

[~rohini] - I have a patch I'm currently E2Eing. I will submit soon.

> Prevent deep copy of DataBag into Jython List
> ---------------------------------------------
>                 Key: PIG-5338
>                 URL: https://issues.apache.org/jira/browse/PIG-5338
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Greg Phillips
>            Assignee: Greg Phillips
>            Priority: Major
>         Attachments: PIG-5338.001.patch, PIG-5338.patch
> Pig Python UDFs currently perform deep copies on Bags converting them into 
> Jython PyLists. This can cause Jython UDFs to run out of memory and fail. A 
> Jython DataBag which extends PyList could allow for iterative access to 
> DataBag elements, while only performing a deep copy when necessary.

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