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abci: update MaxAgeNumBlocks & MaxAgeDuration docs (#88)

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Anton Kaliaev
2020-04-21 19:15:26 +04:00
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parent 7a0cdd53d5
commit f399abd7ac
1 changed files with 9 additions and 4 deletions
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spec/abci/abci.md
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@@ -510,10 +510,15 @@ Commit are included in the header of the next block.
- **Fields**:
- `MaxAgeNumBlocks (int64)`: Max age of evidence, in blocks.
- `MaxAgeDuration (time.Duration)`: Max age of evidence, in time.
Evidence older than this is considered stale and ignored.
- This should correspond with an app's "unbonding period" or other
similar mechanism for handling Nothing-At-Stake attacks.
It should correspond with an app's "unbonding period" or other similar
mechanism for handling [Nothing-At-Stake
attacks](https://github.com/ethereum/wiki/wiki/Proof-of-Stake-FAQ#what-is-the-nothing-at-stake-problem-and-how-can-it-be-fixed).
- Evidence older than `MaxAgeNumBlocks` && `MaxAgeDuration` is considered
stale and ignored.
- In Cosmos-SDK based blockchains, `MaxAgeDuration` is usually equal to the
unbonding period. `MaxAgeNumBlocks` is calculated by dividing the unboding
period by the average block time (e.g. 2 weeks / 6s per block = 2d8h).
### ValidatorParams