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From "Carl Harris (JIRA)" <>
Subject [jira] [Commented] (AMQ-4694) add support for flock-based shared lock file (patch included)
Date Tue, 27 Aug 2013 20:09:52 GMT


Carl Harris commented on AMQ-4694:

I have modified my local copy of the POM to use 4.0.0 and am building and testing now.  I'll
soon update the patch so that it references the later version and amends NOTICES.txt as you
> add support for flock-based shared lock file (patch included)
> -------------------------------------------------------------
>                 Key: AMQ-4694
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Improvement
>          Components: Broker
>    Affects Versions: 5.8.0
>            Reporter: Carl Harris
>         Attachments: patch.txt, README.patch.txt
> This issue provides a patch to add support for using native flock (2) based lock files.
 As discussed in AMQ-4378, using the Shared File System Master/Slave configuration on an OCFS2
filesystem is complicated by Java's use of POSIX locks.  See the attached README for motivation
and description of the approach.
> With this patch, a user can configure KahaDB to use a shared native lock file (using
flock) as follows:
> {code:xml}
> <persistenceAdapter>
>   <kahaDB ...>
>     <locker>
>        <shared-native-file-locker/>
>     </locker>
>   </kahaDB>
> </persistenceAdapter>
> {code}

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