<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have searched the <a href="https://github.com/apache/incubator-dubbo/issues">issues</a> of this repository and believe that this is not a duplicate.</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have checked the <a href="https://github.com/apache/incubator-dubbo/blob/master/FAQ.md">FAQ</a> of this repository and believe that this is not a duplicate.</li>
</ul>
<h3 dir="auto">Environment</h3>
<ul dir="auto">
<li>Dubbo version: 2.6.2+</li>
<li>Operating System version: mac</li>
<li>Java version: jdk8</li>
</ul>
<h3 dir="auto">Steps to reproduce this issue</h3>
<p dir="auto">refer: <a href="https://github.com/apache/incubator-dubbo/issues/2511%EF%BC%8C" data-hovercard-type="issue" data-hovercard-url="/apache/dubbo/issues/2511/hovercard">https://github.com/apache/incubator-dubbo/issues/2511，</a> Multiple reference configurations on the same interface will be overwritten</p>
<p dir="auto">reproduce this issue: <a href="https://github.com/freeseawind/copycat-dubbo">https://github.com/freeseawind/copycat-dubbo</a></p>
<h3 dir="auto">Expected Result</h3>
<p dir="auto"><a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/reference/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/reference">@reference</a> does not affect each other on the same interface</p>
<ul dir="auto">
<li>[ x ] I have searched the <a href="https://github.com/apache/incubator-dubbo/issues">issues</a> of this repository and believe that this is not a duplicate.</li>
<li>[ x ] I have checked the <a href="https://github.com/apache/incubator-dubbo/blob/master/FAQ.md">FAQ</a> of this repository and believe that this is not a duplicate.</li>
</ul>
<h3 dir="auto">Environment</h3>
<ul dir="auto">
<li>Dubbo version:  latest</li>
<li>Operating System version:  mac</li>
<li>Java version: 1.8</li>
</ul>
<h3 dir="auto">Steps to reproduce this issue</h3>
<ol dir="auto">
<li></li>
</ol>
<div class="highlight highlight-source-java notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="public interface DemoService {
    
    int getListSize(List list);
    int getSetSize(Set set);
    
}"><pre class="notranslate"><span class="pl-k">public</span> <span class="pl-k">interface</span> <span class="pl-smi">DemoService</span> {
    
    <span class="pl-smi">int</span> <span class="pl-en">getListSize</span>(<span class="pl-smi">List</span> <span class="pl-s1">list</span>);
    <span class="pl-smi">int</span> <span class="pl-en">getSetSize</span>(<span class="pl-smi">Set</span> <span class="pl-s1">set</span>);
    
}</pre></div>
<ol start="2" dir="auto">
<li>telnet localhost 20881</li>
<li>invoke xxx.getListSize([1,2,3])</li>
<li>invoke xxx.getSetSize([1,2,3])</li>
</ol>
<h3 dir="auto">Expected Result</h3>
<ol start="3" dir="auto">
<li>ok</li>
<li>ok</li>
</ol>
<h3 dir="auto">Actual Result</h3>
<ol start="3" dir="auto">
<li>ok</li>
<li>No such method</li>
</ol>