GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/11864
[SPARK-13473][SQL] Simplifies PushPredicateThroughProject
## What changes were proposed in this pull request?
This is a follow-up of PR #11348.
After PR #11348, a predicate is never pushed through a project as long as
the project contains any non-deterministic fields. Thus, it's impossible that
the candidate filter condition can reference any non-deterministic projected
fields, and related logic can be safely cleaned up.
## How was this patch tested?
Existing test cases should do the work.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark spark-13473-cleanup
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11864.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 #11864
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