Java Fork/Join计算0到Integer之间的整数之和。MAX\u值导致StackOverflow错误

我将使用一个示例来利用多核CPU体系结构,该示例计算0到n的所有整数之和 Integer.MAX_VALUE . 我的阈值是5000000个整数。所以我递归地拆分它,直到它达到阈值。然后当它达到阈值时,我计算总和。最后,将所有总和累加在一起,以计算最终结果。这个问题本质上是递归的,很好地符合Fork/join框架。但当我运行它时,我会出错。有时是Stackoverflow错误。其他时候是这样的。

Exception in thread "ForkJoinPool.commonPool-worker-7" java.lang.NoClassDefFoundError: Could not initialize class java.util.concurrent.locks.AbstractQueuedSynchronizer$Node
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1198)

这是我的代码:

public class ParallelSum extends RecursiveTask<Long> {
    private static final int THRESHOLD = 5000000;

    private final int start;
    private final int end;

    public ParallelSum(int start, int end) {
        super();
        this.start = start;
        this.end = end;
    }

    @Override
    protected Long compute() {
        // System.out.println("Start: " + start + " End: " + end);
        if (end - start > THRESHOLD) {
            return ForkJoinTask.invokeAll(createSubtasks()).stream().mapToLong(ForkJoinTask::join).sum();
        }
        return LongStream.rangeClosed(start, end).sum();
    }

    private Collection<RecursiveTask<Long>> createSubtasks() {
        final List<RecursiveTask<Long>> dividedTasks = new ArrayList<>();
        dividedTasks.add(new ParallelSum(start, end / 2));
        dividedTasks.add(new ParallelSum(end / 2 + 1, end));
        return dividedTasks;
    }
}

主要的方法是这样的,

public class ParallelSumTest {
    public static void main(String[] args) {
        long startTime = System.currentTimeMillis();
        final long sum = new ParallelSum(0, Integer.MAX_VALUE).compute();
        long endTime = System.currentTimeMillis();
        final long elapsedTime = endTime - startTime;
        System.out.println(sum + " was computed in " + elapsedTime + " milliseconds.");
    }
}

这里缺少什么?我做错了什么?非常感谢您的帮助。