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From "Pedro Marques (JIRA)" <>
Subject [jira] [Commented] (AMQ-4338) MQTTSSLTest has multiple test cases that fail frequently
Date Wed, 20 Mar 2013 11:07:17 GMT


Pedro Marques commented on AMQ-4338:

I was testing the system with fusesource client... My code is basically this:

	MQTT mqtt = new MQTT();

	BlockingConnection connection = mqtt.blockingConnection();

I figured the problem I was having was this because the call blocks on "connection.connect()".
The code works perfectly when run on the same machine as the server.

> MQTTSSLTest has multiple test cases that fail frequently
> --------------------------------------------------------
>                 Key: AMQ-4338
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Test Cases
>            Reporter: Kevin Earls
>            Priority: Minor
>         Attachments: AMQ-4338A.patch, AMQ-4338.patch
> MQTTSSLTest has multiple different test cases (including testSendAndReceiveExactlyOnce,
testSendAndReceiveLargeMessages, testSendAndReceiveMQTT, testSendAtLeastOnceReceiveAtMostOnce,
testSendAtLeastOnceReceiveExactlyOnce, testSendJMSReceiveMQTT, testSendMQTTReceiveJMS) which
fail fairly frequently because of a hang on the provider.connect() call in initializeConnection()
as shown in the stacktrace below. 
> Another problem with this test is it was giving a misleading error when run under Hudson,
showing that the test that followed it (MQTTTest) was failing instead.  I think this was because
of the way it was using AutoFailTestSupport.  I will attach a patch which removes that and
uses timeouts on @Test annotations instead.
> testSendAndReceiveLargeMessages(org.apache.activemq.transport.mqtt.MQTTSSLTest)  Time
elapsed: 30.004 sec  <<< ERROR!
> java.lang.Exception: test timed out after 30000 milliseconds
>         at sun.misc.Unsafe.park(Native Method)
>         at java.util.concurrent.locks.LockSupport.park(
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(
>         at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(
>         at java.util.concurrent.CountDownLatch.await(
>         at org.fusesource.mqtt.client.Promise.await(
>         at org.fusesource.mqtt.client.BlockingConnection.connect(
>         at org.apache.activemq.transport.mqtt.FuseMQQTTClientProvider.connect(
>         at org.apache.activemq.transport.mqtt.MQTTSSLTest.initializeConnection(
> Results :
> Tests in error:
>   MQTTSSLTest>AbstractMQTTTest.testSendAndReceiveLargeMessages:247->initializeConnection:60

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