[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-29 Thread gatorsmile
Github user gatorsmile commented on the issue:

https://github.com/apache/spark/pull/17446
  
Thanks! Merging to master.


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-29 Thread AmplabJenkins
Github user AmplabJenkins commented on the issue:

https://github.com/apache/spark/pull/17446
  
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-29 Thread AmplabJenkins
Github user AmplabJenkins commented on the issue:

https://github.com/apache/spark/pull/17446
  
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-29 Thread SparkQA
Github user SparkQA commented on the issue:

https://github.com/apache/spark/pull/17446
  
**[Test build #75348 has 
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 * This patch passes all tests.
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 * This patch adds no public classes.


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-29 Thread wzhfy
Github user wzhfy commented on the issue:

https://github.com/apache/spark/pull/17446
  
LGTM


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-29 Thread gatorsmile
Github user gatorsmile commented on the issue:

https://github.com/apache/spark/pull/17446
  
`null` should not be simply treated as a `false` literal in filter 
estimation. Based on the definition, `Not(null)` should return `null`. If we 
treat `null`  as `false`, `Not(null)` will return `1.0`, which is wrong in many 
cases. 



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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-29 Thread SparkQA
Github user SparkQA commented on the issue:

https://github.com/apache/spark/pull/17446
  
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-28 Thread gatorsmile
Github user gatorsmile commented on the issue:

https://github.com/apache/spark/pull/17446
  
Since this PR does not correctly handle the cases like `Not(Not(null))`, I 
close this PR at first.


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-28 Thread gatorsmile
Github user gatorsmile commented on the issue:

https://github.com/apache/spark/pull/17446
  
@wzhfy `BooleanSimplification ` is unable to get rid of `null`. Boolean 
operations on null is complex. We need more investigation.


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-28 Thread wzhfy
Github user wzhfy commented on the issue:

https://github.com/apache/spark/pull/17446
  
> Ideally, our optimizer rule BooleanSimplification should be able to 
remove the null literal, like what we did for true and false literals. Here, I 
think we should just assume our filter estimation does not depend on any other 
optimizer rules.

Sorry I may miss some context, but I prefer enhancing 
`BooleanSimplification` to deal with null literals. There's no need to 
complicate estimation logic for those deterministic literals which can be 
removed by optimizer.


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread gatorsmile
Github user gatorsmile commented on the issue:

https://github.com/apache/spark/pull/17446
  
Thank you! @ron8hu 


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread ron8hu
Github user ron8hu commented on the issue:

https://github.com/apache/spark/pull/17446
  
The logic is straightforward.  LGTM.


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread AmplabJenkins
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https://github.com/apache/spark/pull/17446
  
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread AmplabJenkins
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread SparkQA
Github user SparkQA commented on the issue:

https://github.com/apache/spark/pull/17446
  
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread AmplabJenkins
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread AmplabJenkins
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread SparkQA
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https://github.com/apache/spark/pull/17446
  
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread SparkQA
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread SparkQA
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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread gatorsmile
Github user gatorsmile commented on the issue:

https://github.com/apache/spark/pull/17446
  
Ideally, our optimizer rule `BooleanSimplification` should be able to 
remove the null literal, like what we did for true and false literals. Here, I 
think we should just assume our filter estimation does not depend on any other 
optimizer rules.


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[GitHub] spark issue #17446: [SPARK-17075][SQL][followup] Add Estimation of Constant ...

2017-03-27 Thread gatorsmile
Github user gatorsmile commented on the issue:

https://github.com/apache/spark/pull/17446
  
cc @ron8hu @cloud-fan @wzhfy 


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