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Date: Wed, 29 Jun 2011 23:43:28 +0000 (UTC)
From: "Timothy Bish (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
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Subject: [jira] [Resolved] (AMQ-3214) "InactivityMonitor Async Task" threads
 leaking
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     [ https://issues.apache.org/jira/browse/AMQ-3214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Timothy Bish resolved AMQ-3214.
-------------------------------

    Resolution: Fixed

Added the call to allowCoreThreadTimeOut(true) since it shouldn't affect the code regardless.  

> "InactivityMonitor Async Task" threads leaking
> ----------------------------------------------
>
>                 Key: AMQ-3214
>                 URL: https://issues.apache.org/jira/browse/AMQ-3214
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: JMS client, Transport
>            Reporter: Minh Do
>            Priority: Critical
>             Fix For: 5.6.0
>
>         Attachments: threadleak.png
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> -Have a multi-thread consumers running to consumer messages
> -Have Connection to have these :
>        		ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(brokerUrl);
> 		connectionFactory.setUseAsyncSend(false);
> 		connectionFactory.setDispatchAsync(false);
> 		connectionFactory.setAlwaysSessionAsync(false);
> 		connectionFactory.setAlwaysSyncSend(true);
> -Run the consumers for several hours and profile it
> -You will see there are threads with the name "InactivityMonitor Async Task" being spawning continuously
> This will cause the entire consumer system to slow down eventually due to thread context switching.  
> Suggestion to fix: we should not put a limit on the number of "InactivityMonitor Async Task" threads to be Max Integer.  There is a bug in Java lib that
> it will not stop a thread after a given idle time-to-live. We could fix this in the file InactivityMonitor.java

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