We are also facing similar problems. Running 2 clusters with 4 nodes. Every 1-2 days all
nodes in a cluster get locked up.
Have no idea on what needs to be done.
Does anyone know under what condition the entire node can be affected. Th eonly thing i
found was
"Also, a slow member could slow or even prevent purging of stable messages
(
http://wiki.jboss.org/wiki/Wiki.jsp?page=JGroupsPbcastSTABLE), so in the worst case, all
members could run out of memory because they would never purge stable messages. Exclusion
of such a member resumes progress in the stability protocol.
+
http://wiki.jboss.org/wiki/Wiki.jsp?page=Shunning"
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