public void testGetGroupInfo() throws Exception {
   testGroupInfoForServer(tsaPort_1, true);
   testGroupInfoForServer(tsaPort_2, false);
   server_1.stop();
   waitTillBecomeActive(jmxPort_2);
   testGroupInfoForServer(tsaPort_1, false);
   testGroupInfoForServer(tsaPort_2, true);
 }
 @Override
 protected void tearDown() throws Exception {
   System.err.println("in tearDown");
   if (server_1 != null && server_1.isRunning()) server_1.stop();
   if (server_2 != null && server_2.isRunning()) server_2.stop();
 }