GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/9770
[SPARK-11725][SQL] correctly handle null inputs for UDF
If user use primitive parameters in UDF, there is no way for him to do the
null-check for primitive inputs, so we are assuming the primitive input is
null-propagatable for this case and return null if the input is null.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark udf
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9770.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 #9770
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commit e258b6ce46bfa0576730d5c46728a4fc8fc7bc24
Author: Wenchen Fan <wenc...@databricks.com>
Date: 2015-11-17T15:08:11Z
correctly handle null inputs for UDF
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