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From freak182 <eman.noll...@gmail.com>
Subject Re: Node capacity
Date Tue, 15 Sep 2009 11:08:13 GMT


Thanks for the answer.
My other concern is, does exportDocumentView or exportSystemView can be
regarded as one option of backing up the nodes?

Thanks a lot.

Alexander Klimetschek wrote:
> On Mon, Sep 14, 2009 at 18:39, freak182 <eman.nollase@gmail.com> wrote:
>> First I want to clarify on few things: in one repository can have 1 or
>> more
>> workspace, right? and in workspace can have 1 or more nodes, right?
> Right.
>> My question is:
>> 1. is there a limit capacity in workspace? in MB or GB?
>> 2. is there a limit capacity in node? in MB or GB?
> Not sure if you mean a quota or a (scaling) limit. Jackrabbit does not
> support a quota mechanism (ie. maximum amount of data per user and/or
> workspace).
> How much data you can put into the repository depends on the
> persistence configuration and the hardware. The best performance can
> be achieved with bundle database persistence managers and a file
> datastore. The latter will allow for a very scalable handling of large
> binary properties. Note that large properties should be binaries...
> (very) long string properties can slow down access to that node.
> Regarding number of nodes it is recommended to distribute the load
> across the tree and to not have many direct children below a node -
> the rough limit until it still scales well is around 10k nodes.
>> 3. if I can set the limit, will jackrabbit will auto-create nodes to
>> store
>> new files/documents?
> As said above, you cannot set a limit (quota). But even if there was
> such a feature - why should setting a limit lead to auto-creation of
> nodes? I think it should rather throw an exception on write if the
> quota is exceeded.
>> 4. if im running out of space in drive c: where my original repository
>> and i
>> want to use drive d:  or other harddisk to be the storage, how easy it to
>> tell jackrabbit to store/read from that hard disk or drive?
> Again, depends on the persistence configuration. If you use a
> database, the mechanisms provided by the db for that case can be used
> (obviously). Otherwise, incl. the file datastore, Jackrabbit does not
> have a mechanism for automatic handling of a full disk. Your
> application will get an (Repository?) exception when trying to write
> to the repository if the disk is full.
> Regards,
> Alex
> -- 
> Alexander Klimetschek
> alexander.klimetschek@day.com

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