This closes #48 forceFailover method

artemis-server/src/main/java/org/apache/activemq/artemis/core/management/impl/ActiveMQServerControlImpl.java

@@ -1928,14 +1928,7 @@ public class ActiveMQServerControlImpl extends AbstractControl implements Active
 
       clearIO();
 
-      try
-      {
-         server.stop(true);
-      }
-      finally
-      {
-         blockOnIO();
-      }
+      server.stop(true);
    }
 
    @Override

artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/ActiveMQServerImpl.java

@@ -753,6 +753,7 @@ public class ActiveMQServerImpl implements ActiveMQServer
       messagingServerControl = null;
       memoryManager = null;
       backupManager = null;
+      storageManager = null;
 
       sessions.clear();
 

tests/integration-tests/src/test/java/org/apache/activemq/artemis/tests/integration/management/ActiveMQServerControlTest.java

@@ -1019,6 +1019,14 @@ public class ActiveMQServerControlTest extends ManagementTestBase
       });
    }
 
+   @Test
+   public void testForceFailover() throws Exception
+   {
+      ActiveMQServerControl serverControl = createManagementControl();
+      serverControl.forceFailover();
+      assertFalse(server.isStarted());
+   }
+
    protected void scaleDown(ScaleDownHandler handler) throws Exception
    {
       SimpleString address = new SimpleString("testQueue");