[jira] [Resolved] (PIG-2067) FilterLogicExpressionSimplifier removed some branches in some cases

["Daniel Dai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-2067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Dai resolved PIG-2067.
-----------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Patch committed to 0.8, 0.9, trunk.

> FilterLogicExpressionSimplifier removed some branches in some cases
> -------------------------------------------------------------------
>
>                 Key: PIG-2067
>                 URL: https://issues.apache.org/jira/browse/PIG-2067
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.8.1, 0.9.0
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: 0.9.0, 0.8.1
>
>         Attachments: PIG-2067-1-0.8.patch, PIG-2067-1.patch
>
>
> The following script produce wrong result:
> {code}
> A = load 'a.dat' as (cookie);
> B = load 'b.dat' as (cookie);
> C = cogroup A by cookie, B by cookie;
> E = filter C by COUNT(B)>0 AND COUNT(A)>0;
> explain E;
> {code}
> a.dat:
> 1       1
> 2       2
> 3       3
> 4       4
> 5       5
> 6       6
> 7       7
> b.dat:
> 3       3
> 4       4
> 5       5
> 6       6
> 7       7
> 8       8
> Expected output:
> (3,{(3)},{(3)})
> (4,{(4)},{(4)})
> (5,{(5)},{(5)})
> (6,{(6)},{(6)})
> (7,{(7)},{(7)})
> We get:
> (3,{(3)},{(3)})
> (4,{(4)},{(4)})
> (5,{(5)},{(5)})
> (6,{(6)},{(6)})
> (7,{(7)},{(7)})
> (8,{},{(8)})

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