[jboss-dev-forums] [Design of JBoss Portal] - Re: portal clustering problem when using optimistic locking

[bstansberry@jboss.com]

"prabhat.jha at jboss.com" wrote : As requested by Galder, I have attached thread dumps from all 5 servers at https://jira.jboss.org/jira/browse/JBPORTAL-1879. File name is aptly named 5-server-dumps.zip.
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  | Not to point/mislead, I see IncomingPacketHandler which Brian had earlier pointed out holding on to lock in each dump.

The IncomingPacketHandler is simply waiting on a queue for a Object.notify() call to wake it up to handle a message.  In none of the thread dumps is it doing anything, which itself is informative -- there's no intra-cluster messages being handled by any of these servers in any of these thread dumps.  That in and of itself is interesting. Makes me question whether whatever is going on here has anything to do w/ clustering.

Scanning through some of these I'm not seeing any unusual blocking of AJP connector threads in either JBC code or JGroups.

If you run these tests with a set of non-clustered portal servers, what kind of #s do you see?

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