GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/10445
[SPARK-12498][SQL][MINOR] BooleanSimplication simplification
Scala syntax and existing Catalyst expression DSL allows us to refactor the
`BooleanSimplification` optimization rule to a clearer and more readable way.
Actually you hardly need any extra comments to understand most of the
transformations.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark
boolean-simplification-simplification
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10445.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 #10445
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commit 41abd4e22b69d2c96e95eb5e4bd329b195731f1b
Author: Cheng Lian <[email protected]>
Date: 2015-12-23T11:03:28Z
BooleanSimplication simplification
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