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From "Helen Huang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQCPP-316) Unable to receive any messages after re-starting message broker
Date Thu, 23 Sep 2010 21:21:41 GMT

    [ https://issues.apache.org/activemq/browse/AMQCPP-316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=62056#action_62056
] 

Helen Huang commented on AMQCPP-316:
------------------------------------

I did some more tests, and found there is still a problem with the sender timeout. Ideally,
we want the MessageSender to proceed as soon as possible after sending a message. So I tried
to set the timeout to be 0 for the failover transport. The MessageSender hangs as the result.
 "failover://(tcp://127.0.0.1:61616)?timeout=0". 

To avoid the hang, I changed the timeout value to 10. This time the MessageSender waited for
about a minute  before getting an exception from CmsTemplate::send(). (I understand the exception
is expected :-) )
"failover://(tcp://127.0.0.1:61616)?timeout=10". 

I thought the time might be spent on trying to re-connect. So I decreased the connectionTimeout
setting for the tcp transport to 200 (used to be 30000 by default). This did not appear to
help. The amount of waiting time seemed to be unchanged.
"failover://(tcp://127.0.0.1:61616?connectionTimeout=200)?timeout=10"

Do you know what might be wrong? 

Thanks a lot for your help again!


> Unable to receive any messages after re-starting message broker
> ---------------------------------------------------------------
>
>                 Key: AMQCPP-316
>                 URL: https://issues.apache.org/activemq/browse/AMQCPP-316
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>          Components: CMS Impl
>    Affects Versions: 3.2.0, 3.2.1, 3.2.2, 3.2.3
>         Environment: Windows xp service pack 3, ActiveMQ broker 5.3.1, apr 1.4.2, apr-util
1.3.9, apr iconv 1.2.1
>            Reporter: Helen Huang
>            Assignee: Timothy Bish
>            Priority: Critical
>             Fix For: 3.2.4, 3.3.0
>
>         Attachments: ReconnectionTest-new.zip, ReconnectionTest.zip
>
>
> We developed two applications that use CmsTemplate to send and receive messages. The
sender application is called MessageSender, and the receiver application is called MessageListener.
We found that the MessageListener is unable to receive any messages after we re-start the
message broker.
> The followings are the steps to recreate the problem:
> (1) start the activemq message broker,
> (2) start MessageListener and MessageSender, and observe that messages are being sent
and received successfully.
> (3) stop the message broker without stopping MessageListener and MessageSender. Wait
for a while (for about a minute or two)
> (4) start the message broker again.
> We expect we can send and receive messages successfully after step (4), but the MessageListener
can never receive any messages any more. Also from the activemq admin page, we find that the
consumer of the topic is gone. We did the test with url "?keepAlive=true&wireFormat.maxInactivityDuration=0",
but it did not work.

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