GitHub user wangyum opened a pull request:
https://github.com/apache/spark/pull/22531
[SPARK-25415][SQL][FOLLOW-UP] Add Locale.ROOT when toUpperCase
## What changes were proposed in this pull request?
Add `Locale.ROOT` when `toUpperCase`.
## How was this patch tested?
manual tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wangyum/spark SPARK-25415
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22531.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 #22531
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commit d138427f35d4980b263dfef21b8810fe455443ca
Author: Yuming Wang <yumwang@...>
Date: 2018-09-23T15:51:53Z
Add Locale.ROOT when toUpperCase
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