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From SCHEDENIG Marian <Marian.Schede...@qualysoft.com>
Subject Cluster nodes show different content
Date Tue, 31 Jul 2012 14:55:22 GMT

it's been several months since my last (unsuccessful) attempt at Jackrabbit clustering. Now
that I finally have time to get back to the issue, I'm still not successful. I set up a fresh
new repository on server A, with the file system, persistence managers and journal all stored
in a local MySQL database. I made sure the database URLs in the repository.xml uses the server's
internal network IP so that the URLs should still be valid when I copy repository.xml to a
new node.

I then copied the repository to server B and changed the cluster ID in the copied repository.xml,
then added the node entry to the database (as described in the wiki).

Now that both servers are running, I see that changes on one system increase that system's
revision counter in the database and also triggers the corresponding update on the other server
(I can see the entry in the log file, and the second server's revision counter is updated
to match the first one). So that part seems right.

Yet when I access either repository via WebDAV, they seem completely independent. All changes
made on server A only show up on server A, and changes on B only show up on B. I can create
resources with the same name and different content on both systems, and both systems will
return their own content. When I repeat the procedure to set up the second cluster node (delete
the old repository directory on B, copy over the one from A, change repository.xml to set
B's cluster ID), B will again show exactly the content it had before, without any of the data
from A.

It seems both servers manage to store their directory structures in the same database tables
independently and read them again without conflicts. As far as I can tell, I followed the
wiki guide correctly, so I can't figure out what's causing this behaviour.

And hints are appreciated. I'm attaching repository.xml from server A. On B, the file's content
is the same, except for the cluster ID which is changed to "". (The security section
references several custom classes, so don't try this at home)


DI Marian Schedenig
Senior Developer

Qualysoft GmbH | Saturn Tower, Leonard-Bernstein-Stra├če 10, A-1220 Wien | Fimenbuchnummer
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