[zeromq-dev] ooc bindings for ØMQ

Matt Weinstein matt_weinstein at yahoo.com
Tue Jun 22 14:44:08 CEST 2010


On Jun 21, 2010, at 1:25 PM, Douglas Creager wrote:

>> 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.

Yup.  I think we're just speaking at different layers, brokering vs.  
computational topology.  The underlying must ensure computational  
correctness is enforceable and enforced.

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