Xiao Li created SPARK-12605:
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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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