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https://issues.apache.org/jira/browse/ARTEMIS-3243?focusedWorklogId=627741&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-627741
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ASF GitHub Bot logged work on ARTEMIS-3243:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 26/Jul/21 13:28
            Start Date: 26/Jul/21 13:28
    Worklog Time Spent: 10m 
      Work Description: gemmellr commented on a change in pull request #3633:
URL: https://github.com/apache/activemq-artemis/pull/3633#discussion_r676602783



##########
File path: 
artemis-protocols/artemis-amqp-protocol/src/main/java/org/apache/activemq/artemis/protocol/amqp/connect/AMQPBrokerConnection.java
##########
@@ -511,22 +534,88 @@ private void connectSender(Queue queue,
                sender.setProperties(mapProperties);
             }
 
+            if (desiredCapabilities != null) {
+               sender.setDesiredCapabilities(desiredCapabilities);
+            }
+
             AMQPOutgoingController outgoingInitializer = new 
AMQPOutgoingController(queue, sender, sessionContext.getSessionSPI());
 
+            sender.open();
+
             ProtonServerSenderContext senderContext = new 
ProtonServerSenderContext(protonRemotingConnection.getAmqpConnection(), sender, 
sessionContext, sessionContext.getSessionSPI(), 
outgoingInitializer).setBeforeDelivery(beforeDeliver);
+            // This will be done on the remote open
+            sender.setContext(new Runnable() {
+               @Override
+               public void run() {

Review comment:
       
https://github.com/gemmellr/activemq-artemis/commit/58b65283fdb1462c6ac01708ecfc4141dd079ea7
 including a new debug test to show the issues, it manipulates a delay between 
the 'refusing attach' and the detach such that the broker actually fires up a 
consumer on the queue, and also flows credit (unusual during a refusal but 
possible) so it even sends messages across before it gets the detach. It should 
instead notice the refusal and skip doing anything. The debug test also (if the 
noted code is commented out) highlights the way the broker falls over the lack 
of caps/props due to overlooking the refusal, whereas it wouldn't if it handled 
the refusal (e.g set a limit on how long it will wait for the detach to explain 
the issue, then kill the bits if it doesnt happen in that time).
   
   I noticed when creating it that that the test sometimes failed due to 
receiving more than the expected number of retries, particularly when that code 
was uncommented, so I think there may be some issues lurking in the reconnect 
stuff. Some of the other tests you have might be useful to find them if they 
more precisely track the total number of connections rather than just the 
number of disconnects that occur.
   
   The commit also has a couple cleanup suggestions for other tests (which 
could apply to some of the others as well)




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

    Worklog Id:     (was: 627741)
    Time Spent: 29h  (was: 28h 50m)

> Enhance AMQP Mirror support with dual mirror
> --------------------------------------------
>
>                 Key: ARTEMIS-3243
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-3243
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>    Affects Versions: 2.17.0
>            Reporter: Clebert Suconic
>            Assignee: Clebert Suconic
>            Priority: Major
>             Fix For: 2.18.0
>
>          Time Spent: 29h
>  Remaining Estimate: 0h
>
> at the current Mirror version, we can only mirror into a single direction.
> With this enhancement the two (or more brokers) would be connected to each 
> other, each one having its own ID, and each one would send updates to the 
> other broker.
> The outcome is that if you just transferred producers and consumers from one 
> broker into the other, the fallback would be automatic and simple. No need to 
> disable and enable mirror options.



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