Hadoop QA commented on PIG-877:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision 792663.

    +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: 
Findbugs warnings: 
Console output: 

This message is automatically generated.

> Push up filter does not account for added columns in foreach
> ------------------------------------------------------------
>                 Key: PIG-877
>                 URL: https://issues.apache.org/jira/browse/PIG-877
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.3.1
>            Reporter: Santhosh Srinivasan
>            Assignee: Santhosh Srinivasan
>             Fix For: 0.3.1
>         Attachments: PIG-877.patch
> If a filter follows a foreach that produces an added column then push up 
> filter fails with a null pointer exception.
> {code}
> ...
> x = foreach w generate $0, COUNT($1);
> y = filter x by $1 > 10;
> {code}
> In the above example, the column in the filter's expression is an added 
> column. As a result, the optimizer rule is not able to map it back to the 
> input resulting in a null value. The subsequent for loop is failing due to 
> NPE.

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