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From "Milind Bhandarkar (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-832) Make import list configurable
Date Thu, 18 Jun 2009 23:26:07 GMT

    [ https://issues.apache.org/jira/browse/PIG-832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721550#action_12721550
] 

Milind Bhandarkar commented on PIG-832:
---------------------------------------

Daniel,

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 command-line.

> 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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