我使用ThreadPoolExecutor创建了以下执行器

try {

            GZIPInputStream gzipIS = new GZIPInputStream(new FileInputStream("filePath"));
            BufferedReader reader = new BufferedReader(new InputStreamReader(gzipIS, Charset.forName("UTF-8")));
            String line = null;
            while ((line = reader.readLine()) != null) {
                executor.execute(new ParallelScan(line));
            }
        } catch (Exception e) {
            System.out.printf("\nException == " + e);
        }

executor = new ThreadPoolExecutor(
            4, 10, 10000000, TimeUnit.MINUTES,
            new ArrayBlockingQueue<Runnable>(1));

最大池大小为10。但当活动线程计数为0时，它仍然失败。它失败并显示以下错误

java.util.concurrent.RejectedExecutionException: java.util.concurrent.ThreadPoolExecutor@33990a0c[Running, pool size = 10, active threads = 0, queued tasks = 0, completed tasks = 23]

有两个原因导致execute抛出RejectedExecutionException 1。
1.队列已满，无法再添加任何线程
1.线程池已关闭
但在我的场景中却不是这样，队列既没有满，ThreadPool也没有关闭。
以上错误的原因可能是什么。