Cheng Hao created SPARK-5404:
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             Summary: Statistic of Logical Plan is too aggresive
                 Key: SPARK-5404
                 URL: https://issues.apache.org/jira/browse/SPARK-5404
             Project: Spark
          Issue Type: Bug
          Components: SQL
            Reporter: Cheng Hao


The statistic number of a logical plan is quite helpful while do optimization 
like join reordering, however, the default algorithm is too aggressive, which 
probably lead to a totally wrong join order.



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