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https://issues.apache.org/jira/browse/JAMES-2295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16539605#comment-16539605
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ASF GitHub Bot commented on JAMES-2295:
---------------------------------------
Github user chibenwa commented on a diff in the pull request:
https://github.com/apache/james-project/pull/127#discussion_r201572560
--- Diff:
server/queue/queue-jms/src/test/java/org/apache/james/queue/jms/JMSMailQueueTest.java
---
@@ -49,7 +49,8 @@ public void setUp(BrokerService broker) throws Exception {
RawMailQueueItemDecoratorFactory mailQueueItemDecoratorFactory =
new RawMailQueueItemDecoratorFactory();
NoopMetricFactory metricFactory = new NoopMetricFactory();
String queueName = BrokerExtension.generateRandomQueueName(broker);
- mailQueue = new JMSMailQueue(connectionFactory,
mailQueueItemDecoratorFactory, queueName, metricFactory);
+ MailQueue.ConsumerOptions consumerOptions = name -> name +
"?consumer.prefetchSize=0";
--- End diff --
I should have an explicit API:
```
ConsumerOptions.builder()
.noPrefetchSize()
.build();
```
And not rely on strings at the API level.
> 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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