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From "GuangWeiHong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-25482) Fast equal can not check reuseSubquery when apply rule about ReuseSubquery
Date Thu, 20 Sep 2018 11:09:00 GMT
GuangWeiHong created SPARK-25482:
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             Summary: Fast equal can not check reuseSubquery when apply rule about ReuseSubquery
                 Key: SPARK-25482
                 URL: https://issues.apache.org/jira/browse/SPARK-25482
             Project: Spark
          Issue Type: Bug
          Components: Optimizer, SQL
    Affects Versions: 2.3.1
            Reporter: GuangWeiHong


the datasource filter should be push down, so there will have to subquery on this query

select count(1) from lineitem where i_partkey > (select max(p_partkey)-1000 from part)


the opt rule about ReuseSubquery will be apply on subquery, but afterRule plan will not be
found by method fastEquals() and subquery will be executed two times.



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