cluster: remove the useless parameter for master

[SEWeiTung]

It seems that at 'RoundRobinHandle', the 'addressType' isn't used but just used at 'SharedHandle', so remove this useless parameter and its related files.

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• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

[Trott]

@nodejs/cluster

[jasnell]

From what I understand, this was done this way to give a standard/common interface for handle types, regardless of whether the argument is used by the actual implementation. @cjihrig ... if I'm remembering correctly, you were the one who refactored the implementation and structure of these. Do you have an opinion on this?

[cjihrig]

if I'm remembering correctly, you were the one who refactored the implementation and structure of these.

I think it was already like that before I refactored the cluster module a few years back, but I could be remembering incorrectly at this point.

From what I understand, this was done this way to give a standard/common interface for handle types, regardless of whether the argument is used by the actual implementation.

That's my understanding as well. At this point in time I don't think it matters much, but in the future, it's possible that cluster is more configurable (something like #11546 maybe), and then it could be more of an issue.

I wouldn't block this from landing, but I'm not enthusiastic enough about it to sign off.

[BridgeAR]

@MaledongGit this needs a rebase.

[SEWeiTung]

@BridgeAR : done :)

[jasnell]

Unfortunately needs another rebase in order to move forward