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From Shaul Dar <shaul...@gmail.com>
Subject Re: Q: Using JackRabbit as a distributed file store
Date Mon, 16 Feb 2009 10:47:11 GMT
I was told by someone that JCR 2.X will support WAN distribution, and also
see the following in the roadmap (
http://jackrabbit.apache.org/jackrabbit-roadmap.html)<http://jackrabbit.apache.org/jackrabbit-roadmap.html>
Am I misunderstanding? Thanks,

-- Shaul
Medium term

   - Apache Jackrabbit 2.0
   - JCR 2.0 support
   - Transactional versioning
   - WebDAV remoting
   - Hot backup
   - Full XPath

On Fri, Feb 13, 2009 at 10:51 AM, Stefan Guggisberg <
stefan.guggisberg@gmail.com> wrote:

> On Thu, Feb 12, 2009 at 8:12 PM, Shaul Dar <shauldar@gmail.com> wrote:
> > Hi,
> > I hope you can help me with the following. I apologize for the length of
> > this message...
> >
> > My organization (non-profit) has a need for what I think of as a
> > distributed, virtual file system. The idea is to abstract logical files
> and
> > folders from their physical location. I.e. logical file = handle,
> physical
> > file = data.
> >
> > There are 2 main user categories: (1) normal users = content creators
> (e.g.
> > video, audio and docs) need to deposit files into logical folders (i.e.
> > create "logical files"), and give them properties (e.g. file content
> type,
> > intended audience). Based on predefined rules, the file should
> > automatically be moved to 1 or more physical servers in the 3 worldwide
> > locations we have, and stored there using the local file system (Windows,
> > Linux etc). (2) Administrators need to control file distribution, i.e.
> > mapping of logical files to physical replicas (e.g. delete/add replicas).
> >
> > We need a Web GUI for users and admins. Should support the logical folder
> > system (create space, create/delete move folder etc), search (by file
> name,
> > size, date created or last modified, and possibly hash value), and a
> > coarse-grain permissions system (e.g. user vs. admin). The back-end
> should
> > perform the necessary file transfers, e.g. add/fetch a replica
> (reliably),
> > preferably over HTTP (i.e. OS agnostic). In between should be a mapping
> > layer that maps logical files to physical files. All metadata should be
> kept
> > in a DB (MySQL).
> >
> > To clarify, I am aware of distributed file systems (*FS), this is not
> what I
> > am looking for. I am looking rather for (1) management piece (Web based
> > interface) described above + (2) the physical transfer layer, and (3) the
> > layer that maps logical/physical files.
> >
> > So my questions are: does JackRabbit provide what we want? Having read
> thru
> > the documentation, I am still unclear on whether it is a framework or a
> > full-blown system, and does it have only back-end components or also a
> > front-end. In short, I'm trying to understand how much we would need to
> > develop? I saw that Day is developing a commercial system, but for a
> hefty
> > sum - is there a free alternative? Also I understand that JackRabbit
> > currently supports JCR 1.x, which does not include distribution across
> > locations? Is there an estimate when it will support JCR 2.x, i.e.
> > WAN distribution?
>
> what makes you think JCR 2.X is about WAN distribution?
>
> cheers
> stefan

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