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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ARTEMIS-1272) Artemis incorrectly handle MQTT acknowledgement
Date Sat, 08 Jul 2017 02:12:00 GMT

    [ https://issues.apache.org/jira/browse/ARTEMIS-1272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078906#comment-16078906
] 

ASF GitHub Bot commented on ARTEMIS-1272:
-----------------------------------------

Github user tabish121 commented on the issue:

    https://github.com/apache/activemq-artemis/pull/1389
  
    This fix lacks any tests so it is not verifiable and would not be protected into the future


> Artemis incorrectly handle MQTT acknowledgement
> -----------------------------------------------
>
>                 Key: ARTEMIS-1272
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1272
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>          Components: MQTT
>    Affects Versions: 1.5.3, 2.1.0
>            Reporter: Odyldzhon Toshbekov
>
> When MQTT client send acknowledgement Artemis acknowledge previous sent messages.
> Test case:
> 1. Connect to Broker (client 1)
> 2. Connect to Broker (client 2)
> 2. Send two messages with QOS = 1
> 3. Send acknowledgement for second message
> A.R. Artemis will remove from queue first and second message
> E.R. Artemis should remove only second message
> 4. Send acknowledgement for first message
> A.R. WARN message "attempted to Ack already Ack'd message"
> The cause of the problem located in the class MQTTPublisherManager methods "handlePubRec",
"handlePubComp", "handlePubAck" and "sendMessage"
> Fix: replace "session.getServerSession().acknowledge" to session.getServerSession().individualAcknowledge




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