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Posted to dev@pig.apache.org by "Lorand Bendig (JIRA)" <ji...@apache.org> on 2013/09/30 16:40:24 UTC

[jira] [Updated] (PIG-3444) CONCAT with 2+ input parameters fail

     [ https://issues.apache.org/jira/browse/PIG-3444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lorand Bendig updated PIG-3444:
-------------------------------

    Attachment: PIG-3444.patch

An attempt to address this issue. 
In the EvalFunc::getArgToFuncMapping the last field of the schema can marked as a vararg field. (schema.setLastFieldSchemaVarArg(true)) .
The idea is that when the funcspec and input schema fields are compared for exact/best fit match, the last funcspec field is taken repeatedly (if it's of type vararg) when comparing with the next input schema field.


> CONCAT with 2+ input parameters fail
> ------------------------------------
>
>                 Key: PIG-3444
>                 URL: https://issues.apache.org/jira/browse/PIG-3444
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>            Reporter: Daniel Dai
>         Attachments: PIG-3444.patch
>
>
> This is a continuation work of PIG-1420 since PIG-1420 is closed. Currently CONCAT fails with more than 2 parameters. The error message is:
> Could not infer the matching function for org.apache.pig.builtin.CONCAT as multiple or none of them fit



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