apache / apache/servicecomb-java-chassis

升级至2.8.18后偶现空指针异常

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Description

servicecomb从2.7.8升级到2.8.18后,出现少量空指针异常,对实际业务没有什么影响,但是由于是新版本引入的,需要分析下原因。堆栈如下:

![Image](https://github.com/user-attachments/assets/cafdc73a-41f4-4526-89ca-00aadf5830df)
从堆栈可以看出抛出空指针的原因是由于RoutingContextImpl的fail方法获取的throwable对象为null

![Image](https://github.com/user-attachments/assets/a625363d-dada-43ce-ac0e-ea2479991706)
throwable来源于Http1xServerRequest的onData方法,按理来说这里e不应该为null

![Image](https://github.com/user-attachments/assets/a3d9faf2-101e-430f-b4e6-b10b235f3ed0)

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