Nodes joining the cluster before finished starting up

[sean...@ebay.com]

Hi!

I'm was having trouble with how to solve a race condition between the starting of a node and the triggering of a MembershipListener method. When I start up a node, I set an attribute on that node and in my MembershipListener, I need to access that attribute. However, when I start up a new node, it looks like the MembershipListener method gets triggered and executed before the new node finishes starting up. This causes a NPE in my MembershipListener method because the attribute hasn't been set yet in the new node, which leads me to a question. Why do nodes join a clustering before they are done starting up? Is there a use case in which this is beneficial? Why not join the cluster after the node is done starting up?

Thanks,

Sean

[ih...@hazelcast.com]

I believe there is the time consuming migration process, that is why. Can you share the code where you get NPE?