GitHub user sameeragarwal opened a pull request:
https://github.com/apache/spark/pull/14795
[SPARK-17228][SQL] Not infer/propagate non-deterministic constraints
## What changes were proposed in this pull request?
Given that filters based on non-deterministic constraints shouldn't be
pushed down in the query plan, unnecessarily inferring them is confusing and a
source of potential bugs. This patch simplifies the inferring logic by simply
ignoring them.
## How was this patch tested?
Added a new test in `ConstraintPropagationSuite`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sameeragarwal/spark deterministic-constraints
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14795.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 #14795
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commit 5be265b764921e5f448681ac566ff415a16eb321
Author: Sameer Agarwal <[email protected]>
Date: 2016-08-24T20:20:05Z
Not infer/propagate non-deterministic constraints
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