zhaoguhong commented on code in PR #9933:
URL: https://github.com/apache/dubbo/pull/9933#discussion_r854849393


##########
dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/integration/RegistryDirectory.java:
##########
@@ -354,8 +356,11 @@ private URL mergeUrl(URL providerUrl) {
 
         providerUrl = providerUrl.addParameter(Constants.CHECK_KEY, 
String.valueOf(false)); // Do not check whether the connection is successful or 
not, always create Invoker!
 
+        // fix issue#9922
+        Map<String, String> providerSideParameters = new 
HashMap<>(providerUrl.getParameters());
+        providerSideParameters.remove(CommonConstants.TAG_KEY);
         // The combination of directoryUrl and override is at the end of 
notify, which can't be handled here
-        this.overrideDirectoryUrl = 
this.overrideDirectoryUrl.addParametersIfAbsent(providerUrl.getParameters()); 
// Merge the provider side parameters
+        this.overrideDirectoryUrl = 
this.overrideDirectoryUrl.addParametersIfAbsent(providerSideParameters); // 
Merge the provider side parameters

Review Comment:
   `DefaultProviderURLMergeProcessor` only remove consumer side `dubbo.tag`, 
provder side `dubbo.tag` still exist 



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