[jboss-dev-forums] [Design of JBossCache] - Re: Data gravitation cleanup process and stale nodes

[bstansberry@jboss.com]

Only vague thought that comes to mind is a concern about data versions with OL. That is, /a/b have a particular data version.  Say a special DataVersion impl like we use in Hibernate caching for structural nodes, where we never report the node as being out-of-date. The removal destroys that on the backup node.  Then the data owner writes /a/b/d.  The special DataVersion impl doesn't replicate to the buddy for /a or /a/b, since the owner didn't think it had written to those nodes.  So the buddy just inserts a default DataVersion.  Now the trees are inconsistent.

I guess, in general I think the idea of making changes to the backup tree when the data owner is still alive is a bad idea.

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