[jira] [Created] (PIG-5333) LoadCaster sometimes not set for complex type

["Koji Noguchi (JIRA)" <ji...@apache.org>]

Koji Noguchi created PIG-5333:
---------------------------------

             Summary: LoadCaster sometimes not set for complex type
                 Key: PIG-5333
                 URL: https://issues.apache.org/jira/browse/PIG-5333
             Project: Pig
          Issue Type: Bug
            Reporter: Koji Noguchi
            Assignee: Koji Noguchi


TypeCasting a bytearray field in the nested foreach below

{code}
A = load 'input.txt' as (a0:bytearray, a1:bytearray);
B = group A by (a0,a1);
C = FOREACH B GENERATE SIZE(A) as sizeofgroup, A;
SPLIT C into D if sizeofgroup > 2, Z OTHERWISE;

F = FOREACH D {
    F1 = FOREACH A generate (chararray) a0;
    GENERATE F1;
}

store F into '/tmp/output/F';
store Z into '/tmp/output/Z';
{code}

Fails with 
{noformat}
Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 1075: Received a bytearray from the UDF or Union from two different Loaders. Cannot determine how to convert the bytearray to string for [a0[7,29]]
        at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POCast.getNextString(POCast.java:1126)
{noformat}



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