GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/15103
[SPARK-17100] [SQL] fix Python udf in filter on top of outer join
## What changes were proposed in this pull request?
In optimizer, we try to evaluate the condition to see whether it's nullable
or not, but some expressions are not evaluable, we should check that before
evaluate it.
## How was this patch tested?
Added regression tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark udf_join
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15103.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 #15103
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commit 1a076b7dd5b3cf28789a87d1b55d81f121fbe752
Author: Davies Liu <[email protected]>
Date: 2016-09-14T21:31:05Z
fix Python udf in filter on top of join
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