Hello!

We're using Jackrabbit's WebDAV layer to access our repository. Works fine so 
far. Now a customer has asked for a clustered repository setup.

I've read the Wiki guide [1] and set up a test installation on two virtual 
machines, but I get the following behaviour (all through WebDAV):


1)      Create folder A on server 1

2)      Create folder B on server 2

3)      Show a new directory listing on both servers. Both servers show the 
same content, but both only show one folder (A or B, not both). The other 
folder seems to be lost.

The last section on the Wiki page ("Concurrent Write Behaviour") makes me fear 
that without locking my sessions accordingly, I will simply get unreported data 
loss like above. I don't really see a way to enforce locking via WebDAV, 
especially without losing performance. Since every request creates its own 
session, as I understand it a user would have to lock each and every resource 
before performing any kind of write operation.

Can anyone confirm or contradict this? Or perhaps any ideas what I could do?

Cheers,
Marian.

[1] http://wiki.apache.org/jackrabbit/Clustering

DI Marian Schedenig
Senior Developer

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