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This does not solve CAP issues.

Their advertised setup is a small number of nodes interconnected with infiniband. Partitioning problem doesn't apply here.

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Partitioning also happens when a node fails. But shouldn't be that much of a problem since they probably use a N=3/W=2 setup.

They don't use quorums. So I guess there will always be 2 replicas and in the case of failure a (Zookeeper-like) master will reconfigure the system.

Partitioning is only one part of CAP. Availability is sacrificed when site-specific power / network systems fail, or worse, when equipment is physically destroyed.

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