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From "Xiao Li (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-12605) Pushing Join Predicates Through Union All
Date Sat, 02 Jan 2016 17:14:39 GMT
Xiao Li created SPARK-12605:
-------------------------------

             Summary: Pushing Join Predicates Through Union All
                 Key: SPARK-12605
                 URL: https://issues.apache.org/jira/browse/SPARK-12605
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 1.6.0
            Reporter: Xiao Li


When selectivity of Join predicates is high, we can push join through union all.



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