如何使主线程在Java中等待另一个完成？

Question

I have come up with following thread 'halo' to make it connect to db (redis, in this case) and in the event that server fails, would wait for a second and try again. In my unit test class, method is executing, and not long after new thread starts, server will fail. But then this new thread 'halo' is immediately shut down. What am I doing wrong?

// almost infinitely large number of sets, interrupted by server seg-fault
    // you gotta try company methods 
    Thread halo = new Thread(new Runnable() {
        @Override
        public void run() {
            int count = 0;
            while (count < Integer.MAX_VALUE) {
                if (JedisPoolFactory.getStatus()) {
                    try {
                        for (int i = 0; i < 10000; i++) {
                            master.set(String.format("key_%d", count), String.format("value_%d", count));
                            System.out.println(master.get(String.format("key_%d", count)));
                            count++;
                        }
                    } catch (JedisConnectionException igr) {
                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException ignore) {}
                    }
                } else {
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException ignrod) {}
                }
            }
        }
    });
    halo.start();

    try {
        master.debug(DebugParams.SEGFAULT());
        halo.join();
    } catch (JedisConnectionException ignored) {
    } catch (InterruptedException igr) {}

Answer 1

线程连接应该在异常之外进行，当主节点发生段故障时，它将调用jedisconnectionexception。