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From "Tobias Strasser (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-233) repository lock file not removed without a clean shutdown
Date Mon, 03 Oct 2005 08:12:48 GMT
    [ http://issues.apache.org/jira/browse/JCR-233?page=comments#action_12331141 ] 

Tobias Strasser commented on JCR-233:

i though of creating and deleting the .lock file as before, but using an exclusive filelock
for the actual locking. so if a starting repository detetcs an existing .lock file, it can
issue a warning, that the repository was not shutdown properly.

> repository lock file not removed without a clean shutdown
> ---------------------------------------------------------
>          Key: JCR-233
>          URL: http://issues.apache.org/jira/browse/JCR-233
>      Project: Jackrabbit
>         Type: Bug
>   Components: core
>     Versions: 1.0
>     Reporter: fabrizio giustina
>  Attachments: replock.293087.diff
> actually when a repository is loaded a ".lock" file is created. This file is removed
only after a clean shutdown but, if a jackrabbit instance has been killed, you have to manually
delete the file in order to load the repository again, also if there was no live instance
of jackrabbit that was using it.
> The problem comes from the fact that the simple presence of the .lock file is used to
indicate a live instance.
> I suggest replacing this behavior using this method (used for example by eclipse when
opening workspaces):
> - when an instance is loaded create a ".lock" file and open it with exclusive access
> - when a new instance is started try to delete an eventual .lock file. Only if the file
can't be deleted because in use assume that another jackrabbit instance is running.

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