两天没解决的问题chatgpt用了5秒搞定隐藏bug

/**
 * 两个从数据库查询的耗时任务
 * @param countDownLatch
 * @param all
 */
public static void testCount(CountDownLatch countDownLatch, List<String> all) {
    for (int i = 0; i < 2; i++) {
        int finalI = i;
        ThreadPoolFactory.getGeneral().execute(() -> {
            try {
                List<String> countList = new ArrayList<>();
                //这里之所以用for循环，是因为查询业务需要0和1两个状态去查询
                if (finalI == 0) {
                //这里其实是查询数据库的mapper操作，为了方便演示
                    countList.add("1");
                    countList.add("2");
                    countList.add("3");
                } else {
                //这里其实是查询数据库的mapper操作，为了方便演示
                    countList.add("5");
                    countList.add("6");
                    countList.add("7");
                    countList.add("8");
                }
                if (countList != null) {
                    all.addAll(countList);
                }
            } catch (Exception ex) {
                ex.printStackTrace();
            } finally {
                countDownLatch.countDown();
            }
        });
    }
}
//线程池类
public class ThreadPoolFactory {
    private static final Logger logger = LoggerFactory.getLogger(ThreadPoolFactory.class);
    private static final ThreadFactory GENERAL_THREAD_FACTORY = new ThreadFactoryBuilder().setNameFormat("general-pool-%d").build();
    /**
     * corePoolSize：核心线程池大小
     * maximumPoolSize：最大线程池大小
     * keepAliveTime：线程最大空闲时间
     * unit：时间单位
     * workQueue：线程等待队列  四种队列 1.ArrayBlockingQueue：有界队列，2.SynchronousQueue：同步队列，3.LinkedBlockingQueue：无界队列，4.DelayQueue：延时阻塞队列
     * threadFactory：线程创建工厂
     * handler：拒绝策略 四种策略 1.ThreadPoolExecutor.AbortPolicy()：2.ThreadPoolExecutor.CallerRunsPolicy()：3.ThreadPoolExecutor.DiscardOldestPolicy()：4.ThreadPoolExecutor.DiscardPolicy()
     */
    private static final ExecutorService GENERAL = new ThreadPoolExecutor(5, 10,
            30L, TimeUnit.MILLISECONDS,
            new LinkedBlockingQueue<>(4096), GENERAL_THREAD_FACTORY, new ThreadPoolExecutor.AbortPolicy());
    public static ExecutorService getGeneral() {
        return GENERAL;
    }
}
//main方法测试
public static void main(String[] args) throws Exception {
    List<String> all = new ArrayList<>();
    CountDownLatch countDownLatch = new CountDownLatch(2);
    testCount(countDownLatch,all);
    countDownLatch.await(10, TimeUnit.SECONDS);
    System.out.println(all);
}

private static final ExecutorService GENERAL = new ThreadPoolExecutor(10, 20,
            30L, TimeUnit.MILLISECONDS,
            new LinkedBlockingQueue<>(4096), GENERAL_THREAD_FACTORY, new ThreadPoolExecutor.AbortPolicy());