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截止到spark 2.0,spark-sql的优化器永远只会返回一个plan #1

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liprais opened this issue May 29, 2016 · 1 comment

liprais commented May 29, 2016

据源代码所示，spark-sql的优化器永远只会返回一个plan，也就是说目前spark-sql只有逻辑优化，没有物理优化

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liprais commented May 29, 2016

https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/planning/QueryPlanner.scala

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