@Override
                public String sayHello(String name, int age) {
                    if (cnt.getAndIncrement() % 3 != 0) {
                        try {
                            Thread.sleep(2000);
                        } catch (Exception ignore) {
                        }
                    }
                    LOGGER.info("xxxxxxxxxxxxxxxxx" + age);
                    return "hello " + name + " from server! age: " + age;
                }
@author <a href="mailto:zhanggeng.zg@antfin.com">GengZhang</a>
test/test-integration/src/test/java/com/alipay/sofa/rpc/test/client/FailFastClusterTest.java