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PBTS: redundant not changes in algorithm removed

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Daniel Cason
2022-05-24 18:28:31 +02:00
committed by Daniel
parent 798bd3c4c6
commit e9e2a0c63f
1 changed files with 2 additions and 11 deletions
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spec/consensus/proposer-based-timestamp/pbts-algorithm_002_draft.md
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@@ -113,23 +113,14 @@ upon ⟨PROPOSAL, h_p, round_p, v, −1⟩ from proposer(h_p, round_p) while ste
} }
``` ```
#### Rules at Lines 28 - 33 remain unchanged #### All other rules remains unchanged
The rule on line 28 applies to values `v` proposed again in the current round because its proposer received `2f + 1 PREVOTE`s for `v` in a previous round `vr`. Notice, in particular, that the rule on line 28 for values re-proposed, and backed by `2f + 1`-equivalent voting power `PREVOTE` messages, is not affected by the changes.
This means that there was a round `r <= vr` in which `2f + 1` processes accepted `v` for the first time, and so sent `PREVOTE`s for `v`.
Which, in turn, means that these processes executed the line 22 of the algorithm, and therefore judged `v` as a `timely` proposal.
In other words, we don't need to verify whether `v` is a timely proposal because at least `f + 1` processes judged `v` as `timely` in a previous round,
and because, since `v` was re-proposed as a `validValue` (line 16), `v.time` has not being updated from its original proposal.
**All other rules remains unchanged.**
Back to [main document][main]. Back to [main document][main].
[main]: ./README.md [main]: ./README.md
[algorithm_v1]: ./v1/pbts-algorithm_001_draft.md
[sysmodel]: ./pbts-sysmodel_002_draft.md [sysmodel]: ./pbts-sysmodel_002_draft.md
[bfttime]: https://github.com/tendermint/tendermint/blob/master/spec/consensus/bft-time.md [bfttime]: https://github.com/tendermint/tendermint/blob/master/spec/consensus/bft-time.md