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Posted to dev@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2015/03/04 14:26:04 UTC

[jira] [Created] (HIVE-9856) Join cost calculation improvements and algorithm selection implementation

Jesus Camacho Rodriguez created HIVE-9856:
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             Summary: Join cost calculation improvements and algorithm selection implementation
                 Key: HIVE-9856
                 URL: https://issues.apache.org/jira/browse/HIVE-9856
             Project: Hive
          Issue Type: Sub-task
    Affects Versions: cbo-branch
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez
             Fix For: cbo-branch


This patch implements more precise cost functions for join operators that may help us decide which join algorithm we want to execute directly in the CBO.



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