[GitHub] spark issue #17138: [SPARK-17080] [SQL] join reorder

[gatorsmile]

Github user gatorsmile commented on the issue:

    https://github.com/apache/spark/pull/17138
  
    CBO should be part of planning, right? The result of CBO should be 
executable plans. IMO, all the CBO rules should be moved the planner. The 
current optimizer is just rule-based. 
    
    ![screen-shot-2015-04-12-at-8 41 
26-am-1024x235](https://cloud.githubusercontent.com/assets/11567269/23736202/80ca67b2-043f-11e7-9aee-c304c8fd0769.png)


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