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From "Ankur (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1482) Pig gets confused when more than one loader is involved
Date Wed, 07 Jul 2010 05:57:50 GMT
Pig gets confused when more than one loader is involved
-------------------------------------------------------

                 Key: PIG-1482
                 URL: https://issues.apache.org/jira/browse/PIG-1482
             Project: Pig
          Issue Type: Bug
    Affects Versions: 0.7.0
            Reporter: Ankur


In case of two relations being loaded using different loader, joined, grouped and projected,
pig gets confused in trying to find appropriate loader for the requested cast. Consider the
following script :-

A = LOAD 'data1' USING PigStorage() AS (s, m, l);
B = FOREACH A GENERATE s#'k1' as v1, m#'k2' as v2, l#'k3' as v3;
C = FOREACH B GENERATE v1, (v2 == 'v2' ? 1L : 0L) as v2:long, (v3 == 'v3' ? 1 :0) as v3:int;

D = LOAD 'data2' USING TextLoader() AS (a);
E = JOIN C BY v1, D BY a USING 'replicated';

F = GROUP E BY (v1, a);
G = FOREACH F GENERATE (chararray)group.v1, group.a;
        
dump G;

This throws the error, stack trace of which is in the next comment


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