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https://issues.apache.org/jira/browse/ARTEMIS-3343?focusedWorklogId=611597&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-611597
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ASF GitHub Bot logged work on ARTEMIS-3343:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 15/Jun/21 21:08
            Start Date: 15/Jun/21 21:08
    Worklog Time Spent: 10m 
      Work Description: clebertsuconic commented on a change in pull request 
#3620:
URL: https://github.com/apache/activemq-artemis/pull/3620#discussion_r652150286



##########
File path: 
artemis-server/src/test/java/org/apache/activemq/artemis/core/config/impl/FileConfigurationParserTest.java
##########
@@ -95,6 +95,22 @@ public void testDuplicateQueue() throws Exception {
       assertEquals(0, 
server.locateQueue(SimpleString.toSimpleString("q")).getMaxConsumers());
    }
 
+   @Test
+   public void testDuplicateAddressSettings() throws Exception {
+      String filename = "FileConfigurationParser-duplicateAddressSettings.xml";
+      FileConfiguration fc = new FileConfiguration();
+      FileDeploymentManager deploymentManager = new 
FileDeploymentManager(filename);
+      deploymentManager.addDeployable(fc);
+      try {
+         deploymentManager.readConfiguration();

Review comment:
       @jbertram / @erwindon 
   
   I think the right thing would be to throw the error like you're doing.. by 
the other hand.. I have seen some installations where the user has 100s of 
destinations configured.. and it will be quite possible to have a duplicate on 
those... 
   
   Considering what I have seen some users doing, I think it would be wise to 
log.warn instead...
   
   I have been using a pattern with ("****** 127 stars 
*****\nMYMESSAGE-GOES-HERE\n****127 stars ****") on places I really want to 
call the user's attention... (don't know if that's cheesy or not.. but it 
certainly catches an eye on logging).. I think we could do something like 
this...
   
   
   WDYT?




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 611597)
    Time Spent: 1h 50m  (was: 1h 40m)

> duplicate address-setting gets lost
> -----------------------------------
>
>                 Key: ARTEMIS-3343
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-3343
>             Project: ActiveMQ Artemis
>          Issue Type: Improvement
>          Components: Configuration
>    Affects Versions: 2.17.0
>            Reporter: Erwin Dondorp
>            Priority: Major
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> In setting file `broker.xml`, it is possible to register multiple 
> `address-setting` blocks for the same `match`. But because these blocks are 
> put in a `Map` (in 
> `org.apache.activemq.artemis.core.deployers.impl.parseAddressSettings()`), 
> any previous block with the same `match` will be effectively ignored.
> This may also happen for some of the other named blocks.
> My suggestion is to raise an error when configuration information is lost.



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