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From: Alessandro Bologna <alessandro.bologna@gmail.com>
Subject: Re: Clearing WorkspaceInfo ItemStateManager
Date: Thu, 2 Aug 2007 09:25:54 -0400
To: users@jackrabbit.apache.org

Actually clustering works because multiple repositories *are* writing  
to the same database. When one repository writes into it, the others  
are notified via the journal, and pick up the changes from the  
database and index them in their local indexes.

Alessandro


On Aug 2, 2007, at 9:18 AM, Nick Stolwijk wrote:

> I have considered clustering, but I thought it would go horrible  
> wrong. If multiple repositories in a cluster starts writing to the  
> same database, I guess bad things happen.
>
> To clearify, multiple applications starts their own repository with  
> the same database behind it. If you write to one of the  
> repositories, it gets written into the database. If you cluster the  
> repositories, the other repositories also wants to write to the  
> same database.
>
> I could be wrong, but I guess that would go wrong. :)
>
> With regards,
>
> Nick Stolwijk
>
> Stefan Guggisberg wrote:
>> On 8/2/07, Nick Stolwijk <nick_stolwijk@planet.nl> wrote:
>>
>>> I've got a problem with multiple repositories that are reading  
>>> from one
>>> database. This was going well, because there was no writing to the
>>> repositories (so read only data). Now, one of the repositories is  
>>> going
>>> to write to the database. Because of the ItemStateManager inside
>>> Jackrabbit, the other repositories aren't picking this up. Is  
>>> there some
>>> way, to get to the WorkspaceInfo or ItemStateManager instance to  
>>> clear
>>> it once in a while?
>>>
>>> With regards,
>>>
>>> Nick Stolwijk
>>>
>>> Ps. I know this is a not supported way of doing it. But for now, we
>>> can't get the customer to run a stand alone repository, that all
>>> applications can connect to.
>>>
>>>
>>
>> have you considered using jackrabbit's clustering feature?
>>
>> cheers
>> stefan
>>
>>
>