可以参考下：https://github.com/apache/dubbo/issues/619 以及这篇文章：https://www.yuque.com/fa902k/id5z6r/sr041v ``` 如果服务提供端报了大量的 NPE 异常, JVM 为了性能会做优化, 会重新编译, 不再打印异常堆栈. 只会抛出预定义的NPE异常java.lang.NullPointerException: null. 见https://www.oracle.com/technetwork/java/javase/relnotes-139183.html ```
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