GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/21309
[SPARK-23907] Removes regr_* functions in functions.scala
## What changes were proposed in this pull request?
This patch removes the various regr_* functions in functions.scala. They
are so uncommon that I don't think they deserve real estate in functions.scala.
We can consider adding them later if more users need them.
## How was this patch tested?
Removed the associated test case as well.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-23907
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21309.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 #21309
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commit ce2c305169d90c4d7803338d85d2d4c92a8e1d3c
Author: Reynold Xin <rxin@...>
Date: 2018-05-11T23:24:15Z
[SPARK-23907] Removes regr_ functions in functions.scala
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