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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1420) Make CONCAT act on all fields of a tuple, instead of just the first two fields of a tuple
Date Thu, 27 May 2010 12:24:29 GMT

    [ https://issues.apache.org/jira/browse/PIG-1420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12872194#action_12872194
] 

Hadoop QA commented on PIG-1420:
--------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12444886/addconcat2.patch
  against trunk revision 948526.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 6 new or modified tests.

    -1 patch.  The patch command could not apply the patch.

Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h1.grid.sp2.yahoo.net/5/console

This message is automatically generated.

> 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
>            Assignee: Russell Jurney
>             Fix For: 0.8.0
>
>         Attachments: addconcat2.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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