Dongjoon Hyun c632bdc01f [SPARK-14029][SQL] Improve BooleanSimplification optimization by implementing Not canonicalization. ... ## What changes were proposed in this pull request? Currently, **BooleanSimplification** optimization can handle the following cases. * a && (!a || b ) ==> a && b * a && (b || !a ) ==> a && b However, it can not handle the followings cases since those equations fail at the comparisons between their canonicalized forms. * a < 1 && (!(a < 1) || b) ==> (a < 1) && b * a <= 1 && (!(a <= 1) || b) ==> (a <= 1) && b * a > 1 && (!(a > 1) || b) ==> (a > 1) && b * a >= 1 && (!(a >= 1) || b) ==> (a >= 1) && b This PR implements the above cases and also the followings, too. * a < 1 && ((a >= 1) || b ) ==> (a < 1) && b * a <= 1 && ((a > 1) || b ) ==> (a <= 1) && b * a > 1 && ((a <= 1) || b) ==> (a > 1) && b * a >= 1 && ((a < 1) || b) ==> (a >= 1) && b ## How was this patch tested? Pass the Jenkins tests including new test cases in BooleanSimplicationSuite. Author: Dongjoon Hyun <dongjoon@apache.org> Closes #11851 from dongjoon-hyun/SPARK-14029.		2016-03-22 10:17:08 -07:00
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src	[SPARK-14029][SQL] Improve BooleanSimplification optimization by implementing Not canonicalization.	2016-03-22 10:17:08 -07:00
pom.xml	[SPARK-11565] Replace deprecated DigestUtils.shaHex call	2016-02-10 09:52:35 +00:00