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Three phase commit protocol

I’m trying to understand the three phase commit protocol by reading the wiki page (http://en.wikipedia.org/wiki/Three-phase_commit_protocol#Motivation). In the description for the diagram I posted below, it says the following: “If the coordinator succeeds in the prepared state, it will move to the commit state. However if the coordinator times out while waiting for an acknowledgement from a cohort, it will abort the transaction. In the case where all acknowledgements are received, the coordinator moves to the commit state as well.“

Three phase commit protocol

I’m trying to understand the three phase commit protocol by reading the wiki page (http://en.wikipedia.org/wiki/Three-phase_commit_protocol#Motivation). In the description for the diagram I posted below, it says the following: “If the coordinator succeeds in the prepared state, it will move to the commit state. However if the coordinator times out while waiting for an acknowledgement from a cohort, it will abort the transaction. In the case where all acknowledgements are received, the coordinator moves to the commit state as well.“

Three-Phase Commit (3PC) question

I’ve been reading about 3PC in a text book, but there aren’t any diagrams or examples, so I found one on wikipedia that I posted below. My question is, what does it mean by “cohorts?” There is no mention of cohorts in the textbook and I don’t see anywhere in the wiki page explaining what it is. Is it simply another word for participants? Thanks for any help.

Three-Phase Commit (3PC) question

I’ve been reading about 3PC in a text book, but there aren’t any diagrams or examples, so I found one on wikipedia that I posted below. My question is, what does it mean by “cohorts?” There is no mention of cohorts in the textbook and I don’t see anywhere in the wiki page explaining what it is. Is it simply another word for participants? Thanks for any help.

Three-Phase Commit (3PC) question

I’ve been reading about 3PC in a text book, but there aren’t any diagrams or examples, so I found one on wikipedia that I posted below. My question is, what does it mean by “cohorts?” There is no mention of cohorts in the textbook and I don’t see anywhere in the wiki page explaining what it is. Is it simply another word for participants? Thanks for any help.