[jira] [Work logged] (ARTEMIS-1604) Artemis deadlock using MQTT Protocol

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARTEMIS-1604?focusedWorklogId=210967&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-210967 ]

ASF GitHub Bot logged work on ARTEMIS-1604:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 11/Mar/19 13:05
            Start Date: 11/Mar/19 13:05
    Worklog Time Spent: 10m 
      Work Description: franz1981 commented on pull request #2577: ARTEMIS-1604 Artemis deadlock using MQTT Protocol
URL: https://github.com/apache/activemq-artemis/pull/2577
 
 
   Direct and async deliveries lock QueueImpl::this and
   ServerConsumerImpl::this in different order causing deadlock:
   has been introduced a deliverLock to prevent both type of delivers
   to concurrently happen, making irrelevant the lock ordering.
 
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Issue Time Tracking
-------------------

            Worklog Id:     (was: 210967)
            Time Spent: 10m
    Remaining Estimate: 0h

> Artemis deadlock using MQTT Protocol
> ------------------------------------
>
>                 Key: ARTEMIS-1604
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1604
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>            Reporter: Tiago Santos
>            Priority: Major
>         Attachments: artemisDeadlock.log, artemis_thread_dump.log, broker.xml
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Hello,
> When load testing artemis as our MQTT Broker, we detected the broker deadlocks and crashs (see attached log).
> Our use case is trying 1000 simultaneous connections (publishers) each sending 1 message per second with 1KB size.
> After all 1000 clients successfully connected to artemis and start sending the messages after a while the deadlock comes up.
> The Xms and Xmx of the JVM both are set to 4GB
> The broker.xml can be found in attach.



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