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From "Russell Jurney (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-1420) Make CONCAT act on all fields of a tuple, instead of just the first two fields of a tuple
Date Tue, 18 May 2010 21:05:42 GMT

     [ https://issues.apache.org/jira/browse/PIG-1420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Russell Jurney updated PIG-1420:
--------------------------------

    Attachment:     (was: concat.patch)

> Make CONCAT act on all fields of a tuple, instead of just the first two fields of a tuple
> -----------------------------------------------------------------------------------------
>
>                 Key: PIG-1420
>                 URL: https://issues.apache.org/jira/browse/PIG-1420
>             Project: Pig
>          Issue Type: Improvement
>          Components: impl
>    Affects Versions: 0.8.0
>            Reporter: Russell Jurney
>             Fix For: 0.7.0
>
>         Attachments: addconcat.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> org.apache.pig.builtin.CONCAT (which acts on DataByteArray's internally) and org.apache.pig.builtin.StringConcat
(which acts on Strings internally), both act on the first two fields of a tuple.  This results
in ugly nested CONCAT calls like:
> CONCAT(CONCAT(A, ' '), B)
> The more desirable form is:
> CONCAT(A, ' ', B)
> This change will be backwards compatible, provided that no one was relying on the fact
that CONCAT ignores fields after the first two in a tuple.  This seems a reasonable assumption
to make, or at least a small break in compatibility for a sizable improvement.

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