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Posted to dev@hive.apache.org by "Zheng Shao (JIRA)" <ji...@apache.org> on 2009/04/13 22:18:15 UTC

[jira] Created: (HIVE-409) Join Operator should directly emit when it sees a row from the last join operand

Join Operator should directly emit when it sees a row from the last join operand
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                 Key: HIVE-409
                 URL: https://issues.apache.org/jira/browse/HIVE-409
             Project: Hadoop Hive
          Issue Type: Improvement
            Reporter: Zheng Shao


Currently we are caching rows till joinEmitInterval. This is not necessary - and if we remove it, we can reduce the number of Object copies a lot (especially in the case we are joining a dimension table with a fact table)


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