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From "Maryann Xue (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PHOENIX-2678) Replace calcite default RelOptCostFactory
Date Thu, 11 Feb 2016 03:43:18 GMT
Maryann Xue created PHOENIX-2678:
------------------------------------

             Summary: Replace calcite default RelOptCostFactory
                 Key: PHOENIX-2678
                 URL: https://issues.apache.org/jira/browse/PHOENIX-2678
             Project: Phoenix
          Issue Type: Improvement
            Reporter: Maryann Xue
            Assignee: Maryann Xue


Right now we apply a PHOENIX_FACTOR on the cost calculated from PhoenixRel to prioritize PhoenixRel
over EnumerableRel, but this has greatly limited the way we implement costing for PhoenixRel.
 
Having a different RelOptCost/RelOptCostFactory can be a solution. We can make PhoenixRel
always generate a cost with getRows() always less than that of EnumerableRel while having
our own RelOptCost implementation to compare the rest two fields.



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