diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 76a1a93e15..2a693078a2 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -623,6 +623,9 @@ Release 2.7.0 - UNRELEASED
     HADOOP-11428. Remove obsolete reference to Cygwin in BUILDING.txt.
     (Arpit Agarwal via wheat9)
 
+    HADOOP-11431. clean up redundant maven-site-plugin configuration.
+    (Herve Boutemy via wheat9)
+
 Release 2.6.0 - 2014-11-18
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-tools/hadoop-azure/pom.xml b/hadoop-tools/hadoop-azure/pom.xml
index 928b500598..8011a809a6 100644
--- a/hadoop-tools/hadoop-azure/pom.xml
+++ b/hadoop-tools/hadoop-azure/pom.xml
@@ -49,21 +49,6 @@
           <effort>Max</effort>
         </configuration>
       </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-site-plugin</artifactId>
-        <dependencies>
-          <dependency>
-            <groupId>org.apache.maven.doxia</groupId>
-            <artifactId>doxia-module-markdown</artifactId>
-            <version>1.3</version>
-          </dependency>
-        </dependencies>
-        <configuration>
-          <inputEncoding>UTF-8</inputEncoding>
-          <outputEncoding>UTF-8</outputEncoding>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-project-info-reports-plugin</artifactId>
diff --git a/hadoop-tools/hadoop-openstack/pom.xml b/hadoop-tools/hadoop-openstack/pom.xml
index e51cf57161..afdda992a1 100644
--- a/hadoop-tools/hadoop-openstack/pom.xml
+++ b/hadoop-tools/hadoop-openstack/pom.xml
@@ -76,21 +76,6 @@
           <effort>Max</effort>
         </configuration>
       </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-site-plugin</artifactId>
-        <dependencies>
-          <dependency>
-            <groupId>org.apache.maven.doxia</groupId>
-            <artifactId>doxia-module-markdown</artifactId>
-            <version>1.3</version>
-          </dependency>
-        </dependencies>
-        <configuration>
-          <inputEncoding>UTF-8</inputEncoding>
-          <outputEncoding>UTF-8</outputEncoding>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-project-info-reports-plugin</artifactId>