链路中有线程切换的怎么追踪?

[dempeZheng]

类似这种，链路中有用到线程池，怎么追踪整条链路

@RequestMapping("/service2")
    @ResponseBody
    public String service() throws Exception {
        Thread.sleep(100);
        Executors.newCachedThreadPool().submit(new Runnable() {
            @Override
            public void run() {
                HttpGet get = new HttpGet("http://localhost:8084/service4");
                try {
                    CloseableHttpResponse response = httpClient.execute(get);

                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });
        return "test";
    }