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From "Navis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-4689) For outerjoins, joinEmitInterval might make different result
Date Sun, 09 Jun 2013 03:58:19 GMT
Navis created HIVE-4689:
---------------------------

             Summary: For outerjoins, joinEmitInterval might make different result
                 Key: HIVE-4689
                 URL: https://issues.apache.org/jira/browse/HIVE-4689
             Project: Hive
          Issue Type: Bug
          Components: Query Processor
            Reporter: Navis
            Assignee: Navis


Alias filter tag is calculated for each group and used for outer joins. But if joinEmitInterval
is smaller than the group size, pre-matured alias filter tag would be used and might introduce
different(wrong) result.

It can be observed in join_1to1.q test but I cannot imagine proper solution which does not
override intention of joinEmitInterval. Should it be disabled for outer joins?

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