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From "Geoff Holden (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (AMQ-1748) Deadlock when TempUsage limit reached
Date Thu, 29 May 2008 16:54:00 GMT

     [ https://issues.apache.org/activemq/browse/AMQ-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Geoff Holden resolved AMQ-1748.
-------------------------------

    Resolution: Fixed

> Deadlock when TempUsage limit reached
> -------------------------------------
>
>                 Key: AMQ-1748
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1748
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.0.0, 5.1.0
>         Environment: Tested on Linux
>            Reporter: Geoff Holden
>            Assignee: Rob Davies
>             Fix For: 5.2.0
>
>         Attachments: missing-file.patch, TempUsageDeadlock.patch
>
>
> If a SystemUsage limit is set on TempUsage, and that limit is reached, that queue enters
a state of deadlock where messages need to be removed so new ones can be added, but they can't
be removed because the objects are locked.
> I have a patch attached to this issue where the synchronization in StoreQueueCursor and
FilePendingMessageCursor is reworked to get around this issue.

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