StackOverflowError的JVM处理方式

news2025/1/21 0:57:14

背景：

事情来源于生产的一个异常日志
Caused by: java.lang.StackOverflowError: null at java.util.stream.Collectors.lambda$groupingBy$45(Collectors.java:908) at java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169) at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
发生该异常并定位到是某个规则的问题后，我们手动修复了规则，不过我们无法确定是否需要重启容器，所以引申出来了发生StackOverflowError是否需要重启容器恢复的讨论

JVM对StackOverflowError线程的处理

结论是JVM只会中断发生StackOverflowError的线程，对于其他未发生StackOverflowError的线程没有影响，验证代码如下：

package stackoverflow;

/**
 * 验证JVM处理StackOverflowError的方式,只会中断异常线程，不影响主线程以及其他线程的执行
 */
public class StackOverFlowTest {


    public static void main(String[] args) throws Exception {
        Thread stackOverflowErrorThread = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(60000L);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                // 进入死循环
                callRecursiveMethod();
            }
        }, "StackOverflowErrorThread");

        Thread otherNormalThread = new Thread(new Runnable() {
            @Override
            public void run() {
                while (true) {
                    System.out.println("I am otherNormalThread thread!!");
                    try {
                        Thread.sleep(10000L);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }, "otherNormalThread");

        stackOverflowErrorThread.start();
        otherNormalThread.start();

        Thread.currentThread().setName("mainThread");
        while (true) {
            System.out.println("I am main thread!!");
            try {
                Thread.sleep(10000L);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }

    /**
     * 死循环模拟StackOverflowError
     */
    public static void callRecursiveMethod() {
        callRecursiveMethod();
    }



}