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https://issues.apache.org/jira/browse/PIG-1577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921741#action_12921741
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David Ciemiewicz commented on PIG-1577:
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Olga, can you clarify the issue?
I've been writing and using UDFs with multiple parameters for years so there
must be some subtlety that is escaping me in this JIRA problem description.
Thanks.
> support to variable number of arguments in UDF
> ----------------------------------------------
>
> Key: PIG-1577
> URL: https://issues.apache.org/jira/browse/PIG-1577
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.6.0
> Reporter: Olga Natkovich
> Assignee: Daniel Dai
> Fix For: 0.9.0
>
>
> In the current implementation, functionality that allows to map arguments to
> classes does not support functions with variable number of arguments. Also it
> does not support funtions that can have variable (but fixed in number) number
> of arguments.
> This causes problems for string UDFs such as CONCAT that can take an
> arbitrary number of arguments or TRIM that can take 1,2, or 3 arguments
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