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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-530) Map Join followup: optimize number of map-reduce jobs
Date Tue, 02 Jun 2009 05:24:07 GMT
Map Join followup: optimize number of map-reduce jobs
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                 Key: HIVE-530
                 URL: https://issues.apache.org/jira/browse/HIVE-530
             Project: Hadoop Hive
          Issue Type: Bug
          Components: Query Processor
    Affects Versions: 0.4.0
            Reporter: Namit Jain
            Assignee: Namit Jain


Instead of creating a temporary destination after every mapJoin, avoid where-ever possible.
Also, replace the Select after MapJoin with a ForwardOperator

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