StackOverflowError的JVM处理方式

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() {@Overridepublic void run() {try {Thread.sleep(60000L);} catch (InterruptedException e) {e.printStackTrace();}// 进入死循环callRecursiveMethod();}}, "StackOverflowErrorThread");Thread otherNormalThread = new Thread(new Runnable() {@Overridepublic 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();}}

未发生Stack Overflow之前

发生Stack Overflow之后

从输入日志也可以验证这一点：

参考：
https://blog.csdn.net/u011983531/article/details/79563162