Combiner gives wrong result in the presence of flattening
---------------------------------------------------------
Key: PIG-51
URL: https://issues.apache.org/jira/browse/PIG-51
Project: Pig
Issue Type: Bug
Reporter: Utkarsh Srivastava
Priority: Critical
If you do something like
a = load ... as (f1,f2,f3);
b = group a by (f1,f2);
c = foreach b generate flatten(group), SUM(a.f3);
The reduce side refers to field number expecting data will not have been
flattened yet. But if the combiner kicks in, it already flattens the group,
leading to column references being wrong.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
