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https://issues.apache.org/jira/browse/SPARK-5404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14291488#comment-14291488
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Apache Spark commented on SPARK-5404:
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User 'chenghao-intel' has created a pull request for this issue:
https://github.com/apache/spark/pull/4199
> 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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