10 Mar
2014
10 Mar
'14
11:37 p.m.
Hi Denis,
On 10 Mar 2014 at 23:12:14, Denis Gervalle (dgl@softec.lu(mailto:dgl@softec.lu)) wrote:
You are saying that users mismatch the DB and the
permanent directory, and
you would like to have that fix automagically ? Not only the jobs status
could be there, but also the attachments, and many other permanent data
that will not match the DB.
I completely agree that mixing inconstantly a DB and a permanent directory
is an annoying issue. I am not sure we could do any magic to fix it. What
could be nice to have is a GUID on the main DB, and in the permanent
directory, that in case of mismatch, prevent the wiki to start fully and
inform the user.
WDYT ?
Indeed, each instance already has a unique id (GUID) stored in the DB :)
So we could also store this value in the distribution’s status.xml file and if the GUID
changes (there’s an API to get it) then inform the user that the DB has changed and
explain with a nice message the out-of-sync issue and what he has to do to fix it (most
likely remove the data/ directory which must be in sync with the DB), and throw a servlet
exception.
I agree it’s safer than trying to fix it automatically.
Thanks
-Vincent
On Mon, Mar 10, 2014 at 3:45 PM, vincent(a)massol.net
wrote:
Hi devs,
Some users are making the following mistake:
- download the zip/exe and install our standalone distribution
(jetty/hsqldb)
- then they configure xwiki to point to another DB (mysql or postgresql
typically)
- then they start XWiki and they get an empty page and no DW
The problem is that they don’t/can’t understand that in the standalone
distribution the data/ directory already has a DW status.xml file that says
the DW has already been executed and thus do not need to be executed again…
We need to find some strategy to avoid this potential error.
Any idea?
Some ideas:
- Idea 1: Improve documentation to explain the need to remove the data/
directory if you change DB
- Idea 2: In the status.xml, store the DW status along with the DB id so
that if the DB changes, the DW can kick in again.
- other?
I personally like idea 2. WDYT?
Thanks
-Vincent
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--
Denis Gervalle
SOFTEC sa - CEO
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