substrate - 在 Substrate 中， `spec_version` 和 `authoring_version` 之间有什么区别？

Question

每个 Substrate 运行时都有一个 RuntimeVersion .此 RuntimeVersion 结构中的字段指示运行时的各个方面何时发生变化，并且每个字段都有自己在这些文档中描述的语义。
我不确定是什么 authoring_version意味着什么时候应该改变。文档中的描述对我来说并不完全清楚

authoring_version: u32

authoring_version is the version of the authorship interface.
An authoring node will not attempt to author blocks unless this
is equal to its native runtime.

如果可能，请提供升级示例，其中:

两者 spec_version和 authoring_version会改变

spec_version会改变，但 authoring_version不会

authoring_version会改变，但 spec_version不会

Answer 1

我将分享 Substrate 核心开发人员提供给我的答案 Bastian Köcher :

There aren't that much changes that result in a bump of the authoring_version

If you for example change the BlockBuilder runtime api in a non-backwards compatible way, you will need to bump the authoring_version

As validators will not be able to build new blocks, without updating the node implementation

And if you just change the runtime api in such a way that you make it incompatible to the previous while don't changing any internals in the runtime that would lead to a different storage root, you would only bump the authoring_version. However, I expect that this probably never happens in reality