GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/23153
[SPARK-26147][SQL] only pull out unevaluable python udf from join condition
## What changes were proposed in this pull request?
https://github.com/apache/spark/pull/22326 made a mistake that, not all
python UDFs are unevaluable in join condition. Only python UDFs that refer to
attributes from both join side are unevaluable.
This PR fixes this mistake.
## How was this patch tested?
a new test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark join
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/23153.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 #23153
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commit cb195cf4b08aef9f4beb3ed4c18580fe5a76c65c
Author: Wenchen Fan <wenchen@...>
Date: 2018-11-27T11:19:12Z
only pull out unevaluable python udf from join condition
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