[jboss-cluster-dev] Re: [javagroups-users] Conversion from FD to FD_ALL

Yes, the change from FD to FD_ALL is correct. However, as I've found out on a recent clustering consulting gig, FD_ALL has some issues with FD.shun="true" on merging. The issue we ran into was a shunfest, where entire subclusters shunned all nodes in different subclusters. This lead to the issue where the cluster never re-merged due to excessive shunning going on. I've created a JIRA issue [1] to look into getting rid of shunning and only deal with merging. However, this is going to be in 2.9 the earliest, not in the 2.6 branch. [1] https://jira.jboss.org/jira/browse/JGRP-937 Brian Stansberry wrote: > I have a task to convert JBoss AS's UDP-based stacks from FD to > FD_ALL.[1] I want to make sure I understand the configuration correctly > such that I can get the same behavior as we have now for the simple case > where one node crashes. (I realize FD_ALL can detect multiple failures > more quickly, which is good.) > > The AS currently uses: > > <FD timeout="6000" max_tries="5" shun="true"/> > > Would this be fairly similar: > > <FD_ALL timeout="30000" interval="6000" shun="true"/> > > In both case it takes 30 secs to suspect a node, in both cases a message > is sent every 6 seconds, and in both cases 5 such messages would have to > be lost for some reason before a healthy node would be suspected. > > [1] https://jira.jboss.org/jira/browse/JBAS-6604