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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-592) schema inferred incorrectly
Date Tue, 15 Sep 2009 01:02:57 GMT

    [ https://issues.apache.org/jira/browse/PIG-592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12755281#action_12755281
] 

Hadoop QA commented on PIG-592:
-------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12419579/PIG-592-1.patch
  against trunk revision 814800.

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

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    -1 core tests.  The patch failed core unit tests.

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/28/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/28/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/28/console

This message is automatically generated.

> schema inferred incorrectly
> ---------------------------
>
>                 Key: PIG-592
>                 URL: https://issues.apache.org/jira/browse/PIG-592
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.4.0
>            Reporter: Christopher Olston
>             Fix For: 0.5.0
>
>         Attachments: PIG-592-1.patch
>
>
> A simple pig script, that never introduces any schema information:
> A = load 'foo';
> B = foreach (group A by $8) generate group, COUNT($1);
> C = load 'bar';       // ('bar' has two columns)
> D = join B by $0, C by $0;
> E = foreach D generate $0, $1, $3;
> Fails, complaining that $3 does not exist:
> java.io.IOException: Out of bound access. Trying to access non-existent column: 3. Schema
{B::group: bytearray,long,bytearray} has 3 column(s).
> Apparently Pig gets confused, and thinks it knows the schema for C (a single bytearray
column).

-- 
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