> I believe as long as the operations are serializable, you can roll > them up across multiple endpoints, depending on your consistency (as > in eventually) you can use source sequencing or clock vectors with a > resolution protocol.
Definitely — in a lot of cases, you can do some post-processing to combine the various "wrong" answers into the "right" answer. You can definitely do that in the SUM case I described. But in general, you can't. An INNER JOIN doesn't work, for instance — if there are matching records that end up on different processing nodes, you lose data.
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