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Date: Mon, 3 Nov 2008 11:37:05 -0800 (PST)
From: "Justin Pitts (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
Subject: [jira] Commented: (AMQ-1990) Failing network connectors randomly
 log SEVERE message : Could not accept connection : java.lang.Object cannot
 be cast to org.apache.activemq.command.Command
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    [ https://issues.apache.org/activemq/browse/AMQ-1990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=47032#action_47032 ] 

Justin Pitts commented on AMQ-1990:
-----------------------------------

I have not verified in anything but 5.1. Our product is currently shipping with 5.1. Should I not expect this issue to be addressed in 5.1?

> Failing network connectors randomly log SEVERE message : Could not accept connection : java.lang.Object cannot be cast to org.apache.activemq.command.Command
> -------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-1990
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1990
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.1.0
>         Environment: Linux, Windows XP, Mac OSX 10.5.1
>            Reporter: Justin Pitts
>         Attachments: CouldNotAcceptConnection.java
>
>
> I have an application which embeds the broker service. A common deployment scenario is a sometimes-connected network of these applications. Unfortunately, I don't have many situations where I can use discovery, so the network connectors are static configurations. Randomly, when these network connections are unable to connect, I see the following exception trace:
> 30 Sep 2008 18:36:18 ERROR [ActiveMQ Transport Initiator: vm://instance-2#2] (TransportConnector.java:234) - Could not accept connection : java.lang.Object cannot be cast to org.apache.activemq.command.Command
> These errors seem like they might be the result of a race condition during start or stop of a network connector. I will attach a sample application which demonstrates the problem. You may have to run the application a couple times to provoke it.

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