[Bug] rmi protocol doesnot work for threads ，iothreads etc..

[hhfdna]

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Apache Dubbo Component

Java SDK (apache/dubbo)

Dubbo Version

dubbo 2.6.2

Steps to reproduce this issue

write a dubbo service with rmi protocol, set iothreads, threads etc. attributes,

What you expected to happen

protocol attribute dispather,threadpool,threads doesnot work for rmi

Anything else

No response

Are you willing to submit a pull request to fix on your own?

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[AlbumenJ]

Dubbo 2.6.x is EOL now. Please check in the latest version.
BTW, rmi is now moved to dubbo-spi-extensions