GitHub user jerryshao opened a pull request:
https://github.com/apache/spark/pull/18552
[Mindo][Doc] Improve the docs about how to correctly set configurations
## What changes were proposed in this pull request?
Spark provides several ways to set configurations, either from
configuration file, or from `spark-submit` command line options, or
programmatically through `SparkConf` class. It may confuses beginners why some
configurations set through `SparkConf` cannot take affect. So here add some
docs to address this problems and let beginners know how to correctly set
configurations.
## How was this patch tested?
N/A
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jerryshao/apache-spark improve-doc
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18552.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 #18552
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commit b24ed6d67caad393a0241f65a904aa0825a3a615
Author: jerryshao <ss...@hortonworks.com>
Date: 2017-07-06T08:51:18Z
Improve the docs to notify user how to correctly set configurations
Change-Id: I48310680cd326dc109c6cd4f30d4f126292ea277
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