Comment by asdfasgasdgasdg

This article isn't very convincing to me. I mean, I one hundred percent buy that eventually consistent stream processing systems can theoretically be subject to unbounded error. But eventual consistency isn't just a theoretical model. It's also a practical engineering decision, and so in order to evaluate its use for any given business purpose we have to see how it performs in practice. That is, what is the average/99.9%/max error? And we have to understand how business-critical the correct answer is. This article has some great examples of theoretical issues with eventually consistent stream processing computation, but it doesn't demonstrate that any real systems evince these problems under any given workload.