GitHub user animenon opened a pull request:
https://github.com/apache/spark/pull/19632
Added description
## What changes were proposed in this pull request?
Description added to better understand example.
## How was this patch tested?
Not required as only comments are required.
Please review http://spark.apache.org/contributing.html before opening a
pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/animenon/spark patch-2
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19632.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 #19632
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commit 74e93252763a281daeab3e859180f536beb9de66
Author: Anirudh <[email protected]>
Date: 2017-11-01T19:42:33Z
Added documentation
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