@Before
    public void before() {

        System.setProperty("stat_log_interval", "1");
        System.setProperty("reporter_type", "MEMORY");
        try {
            reflectSetNewTracer();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
@author <a href=mailto:leizhiyuan@gmail.com>leizhiyuan</a>
tracer/tracer-opentracing/src/test/java/com/alipay/sofa/rpc/tracer/sofatracer/log/stat/RpcClientStatTest.java