dubbo2.6.2版本oneWay调用造成线程上下文污染传递 #8281
Description
- I have searched the issues of this repository and believe that this is not a duplicate.
- I have checked the FAQ of this repository and believe that this is not a duplicate.
Environment
- Dubbo version: 2.7.8
- Operating System version: linux
- Java version: java8
Steps to reproduce this issue
- 调用链为serviceA调用serviceB调用serviceC，整个调用链均为dubbo方式调用
- serviceA调用serviceB为oneWay方式调用不关注返回结果，serviceB调用serviceC为正常的dubbo同步调用，但是serviceB获取到serviceC的返回结果为null，而不是包装过的response，造成解析结果时报NPE异常
- 验证一：修改serviceA调用servoceB的调用方式为同步调用，问题解决，整个调用链路正常
- 验证二：忽略第三步，换另外一种方式验证，在serviceB中添加fitter，清除掉oneWay方式调用的key，整个调用也正常进行
- 结论：在dubbo-rpc module中的org.apache.dubbo.rpc.filter.ContextFilter类中清除的Key列表中不包含oneWay方式调用使用的Key（RETURN_KEY）造成oneWay方式的调用一直向下游调用链传递
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Expected Result
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Actual Result
What actually happens?
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