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From "Ben O'Day (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3273) Slave broker acquires lock file when Master is still alive (shared file system master/slave setup)
Date Tue, 28 Jun 2011 17:13:17 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13056644#comment-13056644
] 

Ben O'Day commented on AMQ-3273:
--------------------------------

someone should add a warning to this page (http://activemq.apache.org/shared-file-system-master-slave.html)
to let people know this is an issue in version 5.5.0 (since its the latest release)...

also, when will 5.6 be released?


> Slave broker acquires lock file when Master is still alive (shared file system master/slave
setup)
> --------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-3273
>                 URL: https://issues.apache.org/jira/browse/AMQ-3273
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Message Store
>    Affects Versions: 5.5.0
>         Environment: Windows 7, Windows Server 2008 
>            Reporter: Dariusz Szablinski
>            Assignee: Dejan Bosanac
>            Priority: Critical
>             Fix For: 5.6.0
>
>         Attachments: LockFile.java.patch
>
>
> The change introduced in AMQ-3237 has triggered issue with LockFile.lock() on Win7 and
Win2k8. See comments to the JRE issue http://bugs.sun.com/view_bug.do?bug_id=6628575 (bottom
of the page).  
> Suggested solution is to use this construction instead:
> fc.lock( 0, Math.max( 1, fc.size() ), false );

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