Hi Dan, I saw this issue before. I have read this too but in my test cases it is always throwing the same exception: InvalidItemState. My understanding was that a merge should happens if there is no same-name siblings.
My 2 cents On Fri, Mar 12, 2010 at 1:17 AM, Dan Diephouse <[email protected] > wrote: > Can I assume this is a bug and file a JIRA? Seems like rather big problem > to > me. > > 2010/3/8 Dan Diephouse <[email protected]> > > > My impression was that as long as you do not have same name siblings, > > concurrent additions are allowed: > > > > > > > http://n4.nabble.com/Problem-in-Multithreaded-Environment-tp516406p516415.html > > > > 2010/3/8 Alexander Klimetschek <[email protected]> > > > > On Mon, Mar 8, 2010 at 13:18, Dan Diephouse > >> <[email protected]> wrote: > >> > I'm having some problems doing concurrent addition of nodes to a > parent > >> node > >> > in Jackrabbit. I'm probably doing something stupid and I'm wondering > if > >> > someone can comment on what that might be. > >> > > >> > I've attached a simple test which starts up a bunch of threads which > add > >> > nodes to a parent node concurrently. If I add in locks I can get this > to > >> > work, but I shouldn't have to use locks IIUC. However, the test always > >> fails > >> > with this: > >> > > >> > javax.jcr.InvalidItemStateException: Item cannot be saved because it > has > >> > been modified externally: node /testParent > >> > >> This exception is to be expected. JCR does not define a guarantee on > >> what concurrent operations an implementation can successfully merge. > >> Locks are present in JCR as a general mechanism for such > >> synchronizations. > >> > >> I believe that this specific case (adding nodes) was improved in 2.0, > >> but I couldn't find a jira issue. Could someone confirm or deny? > >> > >> Regards, > >> Alex > >> > >> -- > >> Alexander Klimetschek > >> [email protected] > >> > > > > > > > > -- > > Dan Diephouse > > http://mulesource.com | http://netzooid.com/blog > > > > > > -- > Dan Diephouse > http://mulesource.com | http://netzooid.com/blog > -- Patricio.-
