dubbo: Server side loadbalance problem

• 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: 2.6.2
• Operating System version: win7
• Java version: 1.8

Step to reproduce this issue

Problem one

I want to test pseudo cluster, I create service like follow code :

public interface DemoService
{
    String sayHello(String name);
}

implement service interface as follows, both loadbalance strategies are random：

@Service(timeout = 5000, loadbalance="random")
public class DemoServiceImpl implements DemoService
{
    @Override
    public String sayHello(String name)
    {
        return "Service1 -> Hello " + name;
    }
}

@Service(timeout = 5000, loadbalance="random")
public class DemoServiceImpl2 implements DemoService
{
    @Override
    public String sayHello(String name)
    {
        return "Service2 -> Hello " + name;
    }
}

I start one appliction to test it.

Expected Result

• random return “Service1” and “Service2” .

Actual Result

• alway return “Service2”

Problem two

change one implement loadbalance stragy as follow:

@Service(timeout = 5000, loadbalance="consistenthash")
public class DemoServiceImpl implements DemoService
{
    @Override
    public String sayHello(String name)
    {
        return "Service1 -> Hello " + name;
    }
}

Expected Result

• random return “Service1” and “Service2” .

Actual Result

• alway return “Service1”

Question

I don’t know how dubbo it works. but it is very strange , it always use consistenthash stragy.

Dubbo provide client and server side loadbalance stragy , Who is at work.

As I know，dubbo has no central node coordinator, may be is client side effect. If remove server side loadblance stragy or improve it ?

could not provid unique way to use loadbalance

• Single loadbalance stragy
• Mixed loadbalance stragy

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