HADOOP-9962. in order to avoid dependency divergence within Hadoop itself lets enable DependencyConvergence. (rvs via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2.1-beta@1523601 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -51,6 +51,9 @@ Release 2.1.1-beta - UNRELEASED
     HADOOP-9945. HAServiceState should have a state for stopped services.
     (Karthik Kambatla via atm)
 
+    HADOOP-9962. in order to avoid dependency divergence within Hadoop itself 
+    lets enable DependencyConvergence. (rvs via tucu)
+
   OPTIMIZATIONS
 
   BUG FIXES

hadoop-project/pom.xml

@@ -939,6 +939,26 @@
           <includeReports>false</includeReports>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>depcheck</id>
+            <configuration>
+              <rules>
+                <DependencyConvergence>
+                  <uniqueVersions>true</uniqueVersions> 
+                </DependencyConvergence>
+              </rules>
+            </configuration>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <phase>verify</phase>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>