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Posted to dev@hive.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2018/11/21 20:41:00 UTC

[jira] [Created] (HIVE-20957) Scale down stats for plan when DPP/SJ is applied

Jesus Camacho Rodriguez created HIVE-20957:
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             Summary: Scale down stats for plan when DPP/SJ is applied
                 Key: HIVE-20957
                 URL: https://issues.apache.org/jira/browse/HIVE-20957
             Project: Hive
          Issue Type: Improvement
          Components: Physical Optimizer, Statistics
            Reporter: Jesus Camacho Rodriguez


Currently, this scale down only happens for TS itself when SJ is applied (HIVE-20775). It would be better to implement an approach that applies the reduction to the TS operator for DPP/SJ and propagates the complete stats over the plan accordingly.



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