I have a client that fires many requests to my cluster using 
ClusterClient's Send(), one request at a time, with a 1 second timeout 
waiting for a response.  While all the cluster nodes are up, the requests 
are correctly (randomly) distributed across the nodes and promptly receive 
a response, no timeouts. If I kill a cluster node, then I expect one or two 
of the requests to timeout because they end up being sent to the now-dead 
node. After that, I expect ClusterClient to realize that the node has died 
and I expect to no longer get timeouts (the workload can easily be handled 
by the remaining nodes). Sometimes it works. Unfortunately, more often than 
not it doesn't work and I continue getting timed out requests until I 
restart every node in the cluster and the client.

Any idea what causes this behavior?

My ClusterClient is initialized with two receptionist addresses. My cluster 
actually has more than 2 nodes and each node has a receptionist with a 
registered destination actor. I tried playing with 
contrib.cluster.receptionist.number-of-contacts but it did not seem to make 
any difference.

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