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https://issues.apache.org/jira/browse/PIG-1719?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai resolved PIG-1719.
-----------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

test-patch result:

     [exec] +1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 3 new or 
modified tests.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning 
messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number 
of javac compiler warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs 
warnings.
     [exec] 
     [exec]     +1 release audit.  The applied patch does not increase the 
total number of release audit warnings.

All tests pass.

Patch committed to both trunk and 0.8 branch.

> New logical plan: FieldSchema generation for BinCond is wrong
> -------------------------------------------------------------
>
>                 Key: PIG-1719
>                 URL: https://issues.apache.org/jira/browse/PIG-1719
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.8.0
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: 0.8.0
>
>         Attachments: PIG-1719-0.patch, PIG-1719-1.patch
>
>
> New logical plan generate incomplete schema for BinCond, if the expression 
> for BinCond is of complex type. Eg,
> {code}
> a = load '1.txt' as (a0, a1:int);
> b = group a by a0;
> c = foreach b generate FLATTEN((IsEmpty(a)?{(65535)}:sequence.FIRST(a.a1)));
> {code}
> The right schema for c is (int), however, in current code, we get null 
> schema. This is because BinCond should get the schema {(int)}, but we get 
> empty bag {}.

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