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https://issues.apache.org/jira/browse/SCB-662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16510709#comment-16510709
 ] 

ASF GitHub Bot commented on SCB-662:
------------------------------------

liubao68 commented on a change in pull request #767: [SCB-662]Using 
cse/servicecomb duplicate key will get list of values
URL: 
https://github.com/apache/incubator-servicecomb-java-chassis/pull/767#discussion_r194969232
 
 

 ##########
 File path: 
foundations/foundation-config/src/main/java/org/apache/servicecomb/config/ConfigUtil.java
 ##########
 @@ -171,7 +171,14 @@ private static void 
duplicateServiceCombConfigToCse(AbstractConfiguration source
       }
 
       String cseKey = CONFIG_CSE_PREFIX + key.substring(key.indexOf(".") + 1);
-      source.addProperty(cseKey, source.getProperty(key));
+      if (!source.containsKey(cseKey)) {
+        source.addProperty(cseKey, source.getProperty(key));
+      } else {
+        LOGGER
+            .warn(
 
 Review comment:
   As shown in test case, this can work. Just when merge, it will not take the 
cse-config-order(which is implemented by file configuration source). We can not 
cover all orders for Configuration sources like enviroment, properties, dynamic 
config and so on, so give a warning  message. 

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> Using cse/servicecomb duplicate key will get list of values
> -----------------------------------------------------------
>
>                 Key: SCB-662
>                 URL: https://issues.apache.org/jira/browse/SCB-662
>             Project: Apache ServiceComb
>          Issue Type: Bug
>            Reporter: liubao
>            Priority: Major
>
> config file 1:
> cse.test.value=a
>  
> config file 2:
> servicecomb.test.value=b
>  
> when get value, will get a,b not a nor b. 



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