From 1070031842404ffebc98c51e5f1d1dfb87e45d16 Mon Sep 17 00:00:00 2001
From: Tom Graves <tgraves@yahoo-inc.com>
Date: Thu, 3 Sep 2015 09:41:50 -0500
Subject: [PATCH] [SPARK-10432] spark.port.maxRetries documentation is unclear

---
 docs/configuration.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/docs/configuration.md b/docs/configuration.md
index fb0315ce7c3cc..29a36bd67f28b 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -1015,7 +1015,11 @@ Apart from these, the following properties are also available, and may be useful
   <td><code>spark.port.maxRetries</code></td>
   <td>16</td>
   <td>
-    Default maximum number of retries when binding to a port before giving up.
+    Maximum number of retries when binding to a port before giving up.
+    When a port is given a specific value (non 0), each subsequent retry will
+    increment the port used in the previous attempt by 1 before retrying. This 
+    essentially allows it to try a range of ports from the start port specified 
+    to port + maxRetries.
   </td>
 </tr>
 <tr>