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From "ASF GitHub Bot (JIRA)" <server-...@james.apache.org>
Subject [jira] [Commented] (JAMES-2295) JMS mailqueue deadlock when a single thread issue several consume
Date Wed, 18 Jul 2018 10:28:00 GMT

    [ https://issues.apache.org/jira/browse/JAMES-2295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16547667#comment-16547667
] 

ASF GitHub Bot commented on JAMES-2295:
---------------------------------------

Github user chibenwa commented on the issue:

    https://github.com/apache/james-project/pull/127
  
    Ah I see your concern... 
    
    Maybe JMSMailQueue can accept a **ConsumerOptions** interface. We don't implement this
interface for JMSMailQueue as it don't make sens (as you mentionned above), and jsut provide
an empty version. In the tests we can enforce the *prefetchSize* (as ActiveMQ is used under
the hood)  via a lambda.


> JMS mailqueue deadlock when a single thread issue several consume
> -----------------------------------------------------------------
>
>                 Key: JAMES-2295
>                 URL: https://issues.apache.org/jira/browse/JAMES-2295
>             Project: James Server
>          Issue Type: Bug
>          Components: Queue
>    Affects Versions: 3.0.0, master, 3.0.1
>            Reporter: Tellier Benoit
>            Priority: Major
>              Labels: bug
>
> This will lead to a dead lock:
> {code:java}
>         MailQueue.MailQueueItem mailQueueItem1 = getMailQueue().deQueue();
>         MailQueue.MailQueueItem mailQueueItem2 = getMailQueue().deQueue();
>         mailQueueItem1.done(true);
>         mailQueueItem2.done(true);
> {code}



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