on Shard Already Picked
Called if Delivery
could not pick up a shard because it was already picked up by another worker.
Returns an action to take in relation to the failure.
By default this callback returns an Action that does nothing. This means that an empty Optional
will be returned from the deliverMessagesFrom()
method.
Parameters
failure
contains an information about the worker who owns the session and gives access to predefined Action
s to handle the error