GitHub user saucam opened a pull request:
https://github.com/apache/spark/pull/5700
[SPARK-7142][SQL]: Minor enhancement to BooleanSimplification Optimizer rule
Use these in the optimizer as well:
A and (not(A) or B) => A and B
not(A and B) => not(A) or not(B)
not(A or B) => not(A) and not(B)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/saucam/spark bool_simp
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/5700.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 #5700
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commit 3eb813e66281b53ca029faa7928cc6c50a69b509
Author: Yash Datta <[email protected]>
Date: 2015-04-25T12:45:48Z
SPARK-7142: Minor enhancement to BooleanSimplification Optimizer rule,
using these rules:
A and (not(A) or B) => A and B
not(A and B) => not(A) or not(B)
not(A or B) => not(A) and not(B)
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