[dubbo] branch 3.0 updated: MultipleRegistry remove duplicate URL (#8896)

[albumenj]

This is an automated email from the ASF dual-hosted git repository.

albumenj pushed a commit to branch 3.0
in repository https://gitbox.apache.org/repos/asf/dubbo.git


The following commit(s) were added to refs/heads/3.0 by this push:
     new 588c0c8  MultipleRegistry remove duplicate URL (#8896)
588c0c8 is described below

commit 588c0c8626fd55b642e883f1808baeb3117948e2
Author: Wang Chengming <634749...@qq.com>
AuthorDate: Mon Sep 27 19:22:34 2021 +0800

    MultipleRegistry remove duplicate URL (#8896)
---
 .../main/java/org/apache/dubbo/registry/multiple/MultipleRegistry.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git 
a/dubbo-registry/dubbo-registry-multiple/src/main/java/org/apache/dubbo/registry/multiple/MultipleRegistry.java
 
b/dubbo-registry/dubbo-registry-multiple/src/main/java/org/apache/dubbo/registry/multiple/MultipleRegistry.java
index a4ed56b..50c0cf5 100644
--- 
a/dubbo-registry/dubbo-registry-multiple/src/main/java/org/apache/dubbo/registry/multiple/MultipleRegistry.java
+++ 
b/dubbo-registry/dubbo-registry-multiple/src/main/java/org/apache/dubbo/registry/multiple/MultipleRegistry.java
@@ -32,6 +32,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
 
 import static 
org.apache.dubbo.common.constants.RegistryConstants.EMPTY_PROTOCOL;
 
@@ -201,7 +202,7 @@ public class MultipleRegistry extends AbstractRegistry {
                 urls.addAll(tmpUrls);
             }
         }
-        return urls;
+        return urls.stream().distinct().collect(Collectors.toList());
     }
 
     protected void init() {