Hi Henrik, Actually the IDCP has a single phase reservation workflow. That is the reason why it explicitly only supports the chain model. The provisioning workflow however is more like a two-phase comment. It was initially a single phase commit, but was redesigned to better support the auto-timer triggered provisioning. I'm just say'in :) - Chin On 7/4/12 5:20 AM, Henrik Thostrup Jensen wrote:
Hi
On Mon, 2 Jul 2012, John MacAuley wrote:
Here is the new and improved NSI CS state machine fresh off the presses and ready for your viewing pleasure. Please study it and prepare questions for the Wednesday call.
I missed the call last week (because I love sitting in airplanes), but could you please explain why we need two phase reserve? (and modify as well though that one makes more sense).
IDCP have two phase ... everything (more or less), and the main result of this was that the implementations became extremely complex and error handling even worse (often lacking).
Two phase looks really nice from a distance. Until you are in the middle of it and there are crying babies and bleeding people everywhere :-).
Best regards, Henrik
Henrik Thostrup Jensen <htj at nordu.net> Software Developer, NORDUnet
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