Hi All,

While using the cluster sharding extension, you have to provide some sort 
of persistence journal so that the plugin can store its metadata 
(ShardRegionAllocated, etc...).

These metadata are used when new actors are instantiated / moved across 
nodes to recover from their frozen state.

Suppose that for any reason your journal becomes corrupted (loses one 
entry, duplicates an entry, whatever). This leads to pretty bad exceptions 
at the actor's startup (Persistence recovery failure), possibly terminating 
the whole region if not correctly handled.

What is the best way to manage this scenario? (I'm asking for ideas at any 
level of the stack, from the supervisor's policy to some sort of 
intervention directly on the journal) 

Any ideas welcome!

Thanks,

D.

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