null should be handled consistently in Join
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Key: PIG-927
URL: https://issues.apache.org/jira/browse/PIG-927
Project: Pig
Issue Type: Bug
Affects Versions: 0.3.0
Reporter: Pradeep Kamath
Currenlty Pig mostly follows SQL semantics for handling null. However there are
certain cases where pig may need to handle nulls correctly. One example is the
join - joins on single keys results in null keys not matching to produce an
output. However if the join is on >1 keys, in the key tuple, if one of the
values is null, it still matches with another key tuple which has a null for
that value. We need to decide the right semantics here.
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