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Yeah, though from what I understand this benchmark is measuring both transactional read and write performance rather than just join performance.

Transactional writes are likely the slowest thing since they need to talk to all replicas.

Actually hmm, do reads need to talk to all replicas in this case (serializable isolation)?

As I understand it, reads only need to talk to the lease owner, which in turn bypasses raft since write consensus guarantees atomicity of after completion of write intents. Cockroach tries best-effort to have the lease owner and the raft leader be the same.

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