Spanner offers both linearizability and serializability. They use the non-standard term "external consistency" to describe the union of those two properties. >

Spanner offers both linearizability and serializability. They use the non-standard term "external consistency" to describe the union of those two properties. >Doesn't spanner introduce new (very unlikely) failure modes that other databases are not impacted by? Curious if you could go into that.