From 5cdf3f339bd6ff983fb8c8fc731f74bd7a49208a Mon Sep 17 00:00:00 2001
From: Daoyuan Wang <daoyuan.wang@intel.com>
Date: Mon, 8 Jun 2015 01:07:50 -0700
Subject: [PATCH] [SPARK-4761] [DOC] [SQL] kryo default setting in SQL Thrift
 server

this is a follow up of #3621

/cc liancheng pwendell

Author: Daoyuan Wang <daoyuan.wang@intel.com>

Closes #6639 from adrian-wang/kryodoc and squashes the following commits:

3c4b1cf [Daoyuan Wang] [DOC] kryo default setting in SQL Thrift server
---
 docs/configuration.md | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/docs/configuration.md b/docs/configuration.md
index 9667cebe0b87c..3960e7e78bde1 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -618,7 +618,7 @@ Apart from these, the following properties are also available, and may be useful
 </tr>
 <tr>
   <td><code>spark.kryo.referenceTracking</code></td>
-  <td>true</td>
+  <td>true (false when using Spark SQL Thrift Server)</td>
   <td>
     Whether to track references to the same object when serializing data with Kryo, which is
     necessary if your object graphs have loops and useful for efficiency if they contain multiple
@@ -679,7 +679,10 @@ Apart from these, the following properties are also available, and may be useful
 </tr>
 <tr>
   <td><code>spark.serializer</code></td>
-  <td>org.apache.spark.serializer.<br />JavaSerializer</td>
+  <td>
+    org.apache.spark.serializer.<br />JavaSerializer (org.apache.spark.serializer.<br />
+    KryoSerializer when using Spark SQL Thrift Server)
+  </td>
   <td>
     Class to use for serializing objects that will be sent over the network or need to be cached
     in serialized form. The default of Java serialization works with any Serializable Java object