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From "Timothy Bish (JIRA)" <jira+amq...@apache.org>
Subject [jira] Commented: (AMQNET-294) durable subscription message loss when master broker fails to slave
Date Wed, 15 Dec 2010 16:24:01 GMT

    [ https://issues.apache.org/jira/browse/AMQNET-294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12971726#action_12971726
] 

Timothy Bish commented on AMQNET-294:
-------------------------------------

Given the way the test case works if that's the broker that you happen to be connected to
and you kill the broker the client might not notice so it could appear to be hung.  The TCP
keep alive is around two hours if enabled so if you never send a message the TcpTransport
would just sit there waiting on receive.  The three stack trace images that you attached to
the other issue looks that way, its sitting waiting to receive something, not having info
on the other threads it just looked to me like it was waiting for more messages.

> durable subscription message loss when master broker fails to slave
> -------------------------------------------------------------------
>
>                 Key: AMQNET-294
>                 URL: https://issues.apache.org/jira/browse/AMQNET-294
>             Project: ActiveMQ .Net
>          Issue Type: Bug
>          Components: NMS
>    Affects Versions: 1.4.1
>         Environment: Windows 7 (client), Windows Server 2008 64-bit (server brokers run
on), Sql Server 2008 (database)
>            Reporter: Mark Gellings
>            Assignee: Jim Gomes
>             Fix For: 1.5.0
>
>         Attachments: Apache.NMS.Test (2).zip, Apache.NMS.Test.zip, DurableConsumerTest.cs,
DurableSubscriberFailoverTest.java, TimsTestRevisedSlightly.zip
>
>
> We are seeing message loss on a durable subscription when using NMS ActiveMQ v1.4.1 and
ActiveMQ v5.4.1.
> Please run the included NUnit test and watch the console output.  When it says "Failover
the broker now!" do as it says.  About 75% of the time less than half of the expected 250
messages come through.
> Using version 1.1 of NMS the majority of the time the test passes.  I have seen it fail
only a few times with this earlier version, and when it does there are only a couple messages
that don't come through.
> In the zip file will be the unit test, and a config directory containing the master and
slave activemq configurations.  We are using JDBC master/slave.

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