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https://issues.apache.org/jira/browse/SLING-1581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Carsten Ziegeler closed SLING-1581.
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> Concurrent session access in event handlers
> -------------------------------------------
>
>                 Key: SLING-1581
>                 URL: https://issues.apache.org/jira/browse/SLING-1581
>             Project: Sling
>          Issue Type: Bug
>          Components: Extensions
>    Affects Versions: Extensions Event 2.3.0
>            Reporter: Jukka Zitting
>            Assignee: Carsten Ziegeler
>             Fix For: Extensions Event 2.4.0
>
>         Attachments: SLING-1581.patch
>
>
> I have a deadlock scenario caused by one thread calling 
> AbstractRepositoryEventHandler.stopWriterSession() while another thread is 
> attempting to lock a node using the same session in 
> TimedJobHandler.runInBackground().
> There's already a writeLock object in TimedJobHandler that's apparently 
> designed to protect against concurrent use of the writer session, but that 
> protection doesn't seem to cover the stopWriterSession() method in the base 
> class.

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