spark git commit: [SPARK-15485][SQL][DOCS] Spark SQL Configuration

[rxin]

Repository: spark
Updated Branches:
  refs/heads/master a15ca5533 -> d20771645


[SPARK-15485][SQL][DOCS] Spark SQL Configuration

#### What changes were proposed in this pull request?
So far, the page Configuration in the official documentation does not have a 
section for Spark SQL.
http://spark.apache.org/docs/latest/configuration.html

For Spark users, the information and default values of these public 
configuration parameters are very useful. This PR is to add this missing 
section to the configuration.html.

rxin yhuai marmbrus

#### How was this patch tested?
Below is the generated webpage.
<img width="924" alt="screenshot 2016-05-23 11 35 57" 
src="https://cloud.githubusercontent.com/assets/11567269/15480492/b08fefc4-20da-11e6-9fa2-7cd5b699ed35.png";>
<img width="914" alt="screenshot 2016-05-23 11 37 38" 
src="https://cloud.githubusercontent.com/assets/11567269/15480499/c5f9482e-20da-11e6-95ff-10821add1af4.png";>
<img width="923" alt="screenshot 2016-05-23 11 36 11" 
src="https://cloud.githubusercontent.com/assets/11567269/15480506/cbd81644-20da-11e6-9d27-effb716b2fac.png";>
<img width="920" alt="screenshot 2016-05-23 11 36 18" 
src="https://cloud.githubusercontent.com/assets/11567269/15480511/d013e332-20da-11e6-854a-cf8813c46f36.png";>

Author: gatorsmile <gatorsm...@gmail.com>

Closes #13263 from gatorsmile/configurationSQL.


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/d2077164
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/d2077164
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/d2077164

Branch: refs/heads/master
Commit: d207716451f722c899b3845ee454f1e16c094125
Parents: a15ca55
Author: gatorsmile <gatorsm...@gmail.com>
Authored: Mon May 23 21:07:14 2016 -0700
Committer: Reynold Xin <r...@databricks.com>
Committed: Mon May 23 21:07:14 2016 -0700

----------------------------------------------------------------------
 docs/configuration.md | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
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http://git-wip-us.apache.org/repos/asf/spark/blob/d2077164/docs/configuration.md
----------------------------------------------------------------------
diff --git a/docs/configuration.md b/docs/configuration.md
index d23f0fe..d6471a8 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -1480,6 +1480,48 @@ Apart from these, the following properties are also 
available, and may be useful
 </table>
 
 
+#### Spark SQL
+Running the <code>SET -v</code> command will show the entire list of the SQL 
configuration.
+
+<div class="codetabs">
+<div data-lang="scala"  markdown="1">
+
+{% highlight scala %}
+// spark is an existing SparkSession
+spark.sql("SET -v").show(numRows = 200, truncate = false)
+{% endhighlight %}
+
+</div>
+
+<div data-lang="java"  markdown="1">
+
+{% highlight java %}
+// spark is an existing SparkSession
+spark.sql("SET -v").show(200, false);
+{% endhighlight %}
+</div>
+
+<div data-lang="python"  markdown="1">
+
+{% highlight python %}
+# spark is an existing SparkSession
+spark.sql("SET -v").show(n=200, truncate=False)
+{% endhighlight %}
+
+</div>
+
+<div data-lang="r"  markdown="1">
+
+{% highlight r %}
+# sqlContext is an existing sqlContext.
+properties <- sql(sqlContext, "SET -v")
+showDF(properties, numRows = 200, truncate = FALSE)
+{% endhighlight %}
+
+</div>
+</div>
+
+
 #### Spark Streaming
 <table class="table">
 <tr><th>Property Name</th><th>Default</th><th>Meaning</th></tr>


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