Hi,

When rebalancing a Shard, the old shard is stopped and a new shard is 
started on another node, after which all messages for that Shard will be 
send to the new node. When a message is received, the actor will be 
created. When Akka-persistence is used the Actor will reload all its events 
and restore state before processing the new message. But if no message is 
sent, the actor will not be created. This can be problematic when the actor 
is has some active state with retry mechanisme or timeout. Is my 
understanding correct?

Is there a way to actively restore the Shard state when the shard is moved 
to another node? One problem I can see with this is when going back to less 
nodes. This means that the shards will be rebalanced, but potentially 
giving memory problems. This will cause rebalancing and memory problems on 
the next node and eventually putting the whole cluster down. Starting the 
cluster will be also problematic for the same reason. 

Cheers,
Jeroen

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