GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/19947
[SPARK-22759] [SQL] Filters can be combined iff both are deterministic
## What changes were proposed in this pull request?
The query execution/optimization does not guarantee the expressions are
evaluated in order. We only can combine them if and only if both are
deterministic. We need to update the optimizer rule: CombineFilters.
## How was this patch tested?
Updated the existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark combineFilters
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19947.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 #19947
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commit e726f548478c769c061a52ead12948239792a404
Author: gatorsmile <[email protected]>
Date: 2017-12-12T00:49:09Z
fix.
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