JBoss
throws error when 2 instances are started simultaneously in Clustered Environment.
There are
cases where a JBoss instance throws error when another JBoss Instance is
started along with the current one. If 2 JBoss Instances are started at the
same time, they both may think that they are the JGroups coordinator at that
current point. At this point you have 2 JBoss instances (Or 2 JBoss Clusters)
which are running independently in a cluster. If this happens they both may decide
to start the single ton services such as HA-JMS , JNDI e.t.c.But in a few
seconds they both may discover each other and will combine causing one JBoss
instance to be a Jgroups coordinator and stopping the HA-Single ton services
started by the other JBoss instance. Hence stopping of the services in the
middle may cause issues and throw errors.
We need to
make sure that we give enough time for the second JBoss instance to start.
Happy
Learning J
