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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-800) script1-hadoop.pig in pig tutorial hangs when run in local mode
Date Thu, 07 May 2009 18:30:45 GMT

    [ https://issues.apache.org/jira/browse/PIG-800?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12707028#action_12707028
] 

Hadoop QA commented on PIG-800:
-------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12407547/PIG-800.patch
  against trunk revision 771844.

    +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 passed core unit tests.

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

Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/31/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/31/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/31/console

This message is automatically generated.

> script1-hadoop.pig in pig tutorial hangs when run in local mode
> ---------------------------------------------------------------
>
>                 Key: PIG-800
>                 URL: https://issues.apache.org/jira/browse/PIG-800
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.2.0
>            Reporter: Alan Gates
>            Assignee: Alan Gates
>         Attachments: PIG-800.patch
>
>
> Any script of the form
> {code}
> B = foreach A generate flatten(X); -- X is a bag
> C = distinct B;
> {code}
> where X is sometimes an empty bag will hang in local mode.  If distinct is replaced by
order by it will also hang.
> The issue is that the flatten in foreach returns STATUS_NULL whenever the bag X is empty.
 PODistinct and POSort handle this incorrectly and go into an infinite loop.

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