HADOOP-12061. Incorrect command in single cluster setup document. Contributed by Kengo Seki.

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -599,6 +599,9 @@ Release 2.7.2 - UNRELEASED
     HADOOP-11932. MetricsSinkAdapter may hang  when being stopped.
     (Brahma Reddy Battula via jianhe)
 
+    HADOOP-12061. Incorrect command in single cluster setup document.
+    (Kengo Seki via aajisaka)
+
 Release 2.7.1 - 2015-07-06 
 
   INCOMPATIBLE CHANGES

hadoop-common-project/hadoop-common/src/site/markdown/SingleCluster.md.vm

@@ -139,7 +139,7 @@ If you cannot ssh to localhost without a passphrase, execute the following comma
 
       $ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
       $ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
-      $ export HADOOP\_PREFIX=/usr/local/hadoop
+      $ chmod 0600 ~/.ssh/authorized_keys
 
 $H3 Execution