I wonder why it took 3 hours to clear state.
It didn't -- it took 3 hours to get all the machines talking again after the state was cleared.
This is probably mostly due to two factors: 1. When doing a "clean restart" Amazon almost certainly had each S3 node look at the data it had stored to make sure that they had correct metadata; and 2. After each node had been restarted, Amazon probably had to relink them gradually rather than all at once -- most self-organizing network protocols have limits on the rate at which nodes can join or leave the network.
Re:Why S3 went down
by curiousgeorge on Saturday July 26, 2008 @12:31AM
(#257365)
Data integrity testing?
Data integrity testing?
This question no verb? Or rather... I have no clue what you're asking, can you clarify?
The question mark isn't being used to end a question, he's using it to ask for confirmation of a statement. He's writing in a way that mimics how people talk to each when they meet face-to-face.
For example:
Jack: I wonder what Jill's favourite flavour of ice cream is.
Sam: Chocolate?
Jack: Yes, that's the one.
By 2:20pm PDT, we'd restored internal communication..."
I wonder why it took 3 hours to clear state.