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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-12017) Do not disable CBO by default when number of joins in a query is equal or less than 1
Date Fri, 02 Oct 2015 15:41:26 GMT
Jesus Camacho Rodriguez created HIVE-12017:
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             Summary: Do not disable CBO by default when number of joins in a query is equal
or less than 1
                 Key: HIVE-12017
                 URL: https://issues.apache.org/jira/browse/HIVE-12017
             Project: Hive
          Issue Type: Improvement
          Components: CBO
    Affects Versions: 2.0.0
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez


Instead, we could disable some parts of CBO that are not relevant if the query contains 1
or 0 joins. Implementation should be able to define easily other query patterns for which
we might disable some parts of CBO (in case we want to do it in the future).



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