Hi,
I have a query regarding entity bean failover. To
begin with, is there any such thing as entity bean
failover? The scenario is such that the EJB client has
obtained a reference to the bean (EJBObject) through a
finder method and quite possibly invoked a few methods
on the bean. At this stage, the server/container
crashes. What would happen for subsequent method
invocations on the bean ( assuming that we have a
clustered server environment)?
Also, how can the EJB container achieve this? Would
this imply that to have entity bean failover all
entity beans would have to be replicated across the
containers? What would be the implication of such
replication on concurrent access to the entity beans?
We are trying to come up with a set of test suites to
compare the different EJB servers and this is one of
the things we needed to check.
Prasad
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