[jira] Kommentiert: (JCR-213) Avoid creation of more than one jackrabbit instance with the same configuration

["Felix Meschberger (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/JCR-213?page=comments#action_12323015 ] 

Felix Meschberger commented on JCR-213:
---------------------------------------

> i woud also mark it for 'auto-deletion' by calling File.deleteOnExit() 

I would not. Apart from deleteOnExit() being prone to memory problems, I think the existence of the lock file beyond the life time of the repository would indicate problems.

> Avoid creation of more than one jackrabbit instance with the same configuration
> -------------------------------------------------------------------------------
>
>          Key: JCR-213
>          URL: http://issues.apache.org/jira/browse/JCR-213
>      Project: Jackrabbit
>         Type: Improvement
>   Components: core
>     Reporter: Edgar Poce
>     Assignee: Edgar Poce
>     Priority: Minor
>      Fix For: 1.0
>  Attachments: 05-09-09-lockRepoHome.patch
>
> based on the mailing list archive, it seems new users often run more than one jackrabbit instance with the same configuration. I propose to lock the repository by creating an empty file called ".lock" at the repository home on startup and remove it on shutdown.
> If the lock file is found on jackrabbit startup the following message will be logged:
> "The repository home at " + home.getAbsolutePath() + " appears to be in use. If you are sure it's not in use please delete the file at  " + lock.getAbsolutePath() + ". Probably the repository was not shutdown properly."

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