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Kegan Dougal 2017-04-18 17:54:35 +01:00
parent f00b7723ca
commit d56244549a
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src/github.com/matrix-org/dendrite/syncserver/sync/requestpool.go
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@ -174,6 +174,10 @@ func (rp *RequestPool) currentSyncForUser(req syncRequest) (*types.Response, err
// Servers advance state events (e.g from D' to D'') based on the state conflict resolution algorithm.
// You might think that you could advance the current state by just updating the entry for the (event type, state_key) tuple
// for each state event, but this state can diverge from the state calculated using the state conflict resolution algorithm.
// For example, if there are two "simultaneous" updates to the same state key, that is two updates at the same depth in the
// event graph, then the final result of the state conflict resolution algorithm might not match the order the events appear
// in the timeline.
//
// The correct advancement for state events is represented by the add_state_ids and remove_state_ids that
// are in OutputRoomEvents from the room server.