[jboss-jira] [JBoss JIRA] Commented: (JBMESSAGING-1468) Eliminate message.copy on DLQ and Expire. Instead just creating a new reference to the same message.

[Tim Fox (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBMESSAGING-1468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12443030#action_12443030 ] 

Tim Fox commented on JBMESSAGING-1468:
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Message copying is necessary when sending a message to DLQ or expiry queue.

This is because the same message can be sent to a topic with many subscribers. Each subscriber can then expire or dlq the message at a different time, with different values of properties.

If we didn't copy it that wouldn't work.

> Eliminate message.copy on DLQ and Expire. Instead just creating a new reference to the same message.
> ----------------------------------------------------------------------------------------------------
>
>                 Key: JBMESSAGING-1468
>                 URL: https://jira.jboss.org/jira/browse/JBMESSAGING-1468
>             Project: JBoss Messaging
>          Issue Type: Task
>            Reporter: Clebert Suconic
>            Assignee: Tim Fox
>
> DLQ and Expire are copying Messages between queues, by assigning a new ID.
> This will be a problem with LargeMessages. (Say if  a message has 2G. The move will need to copy a file around on the server file, and this could lead to timeouts since Expire could be generated from the user side).
> This would be a problem with replication also.

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