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https://issues.apache.org/jira/browse/AMQ-6285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15276879#comment-15276879
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ASF subversion and git services commented on AMQ-6285:
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Commit 0ba9f9340f3d568db54923e03b9abfb5a5352a38 in activemq's branch 
refs/heads/activemq-5.13.x from [~cshannon]
[ https://git-wip-us.apache.org/repos/asf?p=activemq.git;h=0ba9f93 ]

https://issues.apache.org/jira/browse/AMQ-6285

Added an extra isShutdown() failsafe check when detecting if the
checkpoint thread should start

(cherry picked from commit 91213010b30d426095c16d3fa8d5fa2cafaf05e5)


> MessageDatabase doesn't properly cleanup the checkpoint scheduler on shutdown
> -----------------------------------------------------------------------------
>
>                 Key: AMQ-6285
>                 URL: https://issues.apache.org/jira/browse/AMQ-6285
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker, KahaDB
>    Affects Versions: 5.13.3
>            Reporter: Christopher L. Shannon
>            Assignee: Christopher L. Shannon
>            Priority: Minor
>             Fix For: 5.14.0, 5.13.4
>
>
> On KahaDB store close the checkpoint scheduler service is shutdown but it is 
> not set to null.  This is an issue because on startup of the store, the 
> scheduler is checked for null and only started if it is null.  Therefore, if 
> a store was previously started and shutdown, when started again the thread 
> would not re-start.
> This would not normally cause a problem for the usual use case as a store is 
> typically only closed when the broker is shut down, however it is a good idea 
> to fix it as this behavior could change in the future plus the start/stop 
> methods are public on the store so it is possible to start/stop the store 
> even though it isn't normally done.
>  



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