Milind Bhandarkar commented on PIG-832:


Pig streaming already uses backquotes for executing external programs. So, 
users are familiar with this syntax. I believe an ordinary pig user already 
knows about doing such things in unix shells. But anyway, as Olga said, she is 
looking for requirements, and not solutions, so, here is a requirement:

I have two jars: xyz.jar, and abc.jar. I am using two UDFs in my scripts. I 
want to use function1 from xyz.jar, and function2 from abc.jar. How do I use 
function2 from abc.jar with full confidence that xyz.jar does not contain a UDF 
named function2? How do you propose I do that  without modifying a whole bunch 
of pig scripts that I am testing for my functions ?

In the solution that I proposed, I can just change function2 mapping by 
including "-Dimport.list=function2:com.yahoo.milind.function2" on the 

> Make import list configurable
> -----------------------------
>                 Key: PIG-832
>                 URL: https://issues.apache.org/jira/browse/PIG-832
>             Project: Pig
>          Issue Type: Improvement
>    Affects Versions: 0.2.0
>            Reporter: Olga Natkovich
>            Assignee: Daniel Dai
>             Fix For: 0.3.0
> Currently, it is hardwired in PigContext.

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