GitHub user gatorsmile reopened a pull request:
https://github.com/apache/spark/pull/17446
[SPARK-17075][SQL][followup] Add Estimation of Constant Literal
### What changes were proposed in this pull request?
`FalseLiteral` and `TrueLiteral` should have been eliminated by optimizer
rule `BooleanSimplification`, but null literals might be added by optimizer
rule `NullPropagation`. For safety, our filter estimation should handle all the
eligible literal cases.
### How was this patch tested?
Added the test cases.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark constantFilterEstimation
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17446.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #17446
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commit 8a0e8b0f290826d6453739a4039665e9e9806471
Author: Xiao Li <[email protected]>
Date: 2017-03-28T00:47:23Z
fix.
commit d770dbbe383d6455682abfd2fc4cc81a1ffef969
Author: Xiao Li <[email protected]>
Date: 2017-03-28T00:51:23Z
Merge remote-tracking branch 'upstream/master' into constantFilterEstimation
commit 1775ca73e9b2918fdc212fbe517f2e743f048368
Author: Xiao Li <[email protected]>
Date: 2017-03-28T01:38:14Z
revert
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