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https://issues.apache.org/jira/browse/AMQ-9483?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthew Washburn updated AMQ-9483:
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Attachment: 796.patch
> Non Daemon Connection Keeping JVM alive when combined with
> optimizedAckScheduledAckInterval
> -------------------------------------------------------------------------------------------
>
> Key: AMQ-9483
> URL: https://issues.apache.org/jira/browse/AMQ-9483
> Project: ActiveMQ Classic
> Issue Type: Bug
> Components: JMS client
> Affects Versions: 5.18.4
> Reporter: Matthew Washburn
> Priority: Major
> Attachments:
> 0001-make-sure-the-executor-service-for-deliveryingAcknow.patch, 796.patch
>
>
> The thread used to send ack unacked messages when using the
> optimizedAckScheduledAckInterval is not daemon even if the connection is set
> to daemon. This is probably advantageous as you would not want a queue or
> durable topic consumer to shutdown before it has finished acking a message
> causing it to be redelivered on restart. On the other hand, it means that if
> the optimized ack scheduler ever kicks in on a daemon connection the JVM will
> never exit. Also the thread isn't uniquely named so it's hard to track down.
>
> I'm not sure how to get in the situation where there are unacked messages
> that are acked by the timer so I'm not sure how to create a simple repo
> script but the attached patch fixes my application.
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