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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1172) PushDownForeachFlatten shall not push ForEach below Join if the flattened fields is used in Join
Date Thu, 24 Dec 2009 22:14:29 GMT
PushDownForeachFlatten shall not push ForEach below Join if the flattened fields is used in
Join
------------------------------------------------------------------------------------------------

                 Key: PIG-1172
                 URL: https://issues.apache.org/jira/browse/PIG-1172
             Project: Pig
          Issue Type: Bug
          Components: impl
    Affects Versions: 0.6.0
            Reporter: Daniel Dai
            Assignee: Daniel Dai
             Fix For: 0.6.0


Currently the following script will push B below D. But we will use fattened column in the
join, we cannot push that.

A = load '1.txt' as (bg:bag{t:tuple(a0,a1)});
B = FOREACH A generate flatten($0);
C = load '3.txt' AS (c0, c1);
D = JOIN B by a1, C by c1;
E = limit D 10;
explain E;


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