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Opti-sync: extend optimistic node definition #2955

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Merged
djrtwo merged 2 commits into from
Aug 15, 2022
Merged

Opti-sync: extend optimistic node definition #2955

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eac16b0
Extend optimistic node definition
mkalinin Jul 27, 2022
0555cb8
Update sync/optimistic.md
mkalinin Aug 2, 2022
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8 changes: 6 additions & 2 deletions sync/optimistic.md
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Expand Up @@ -89,8 +89,12 @@ def is_optimistic_candidate_block(opt_store: OptimisticStore, current_slot: Slot
return False
```

Let only a node which returns `is_optimistic(opt_store, head) is True` be an *optimistic
node*. Let only a validator on an optimistic node be an *optimistic validator*.
Let a node be an *optimistic node* if its fork choice is in one of the following states:
1. `is_optimistic(opt_store, head) is True`
2. Blocks from every viable (with respect to FFG) branch have transitioned from `NOT_VALIDATED` to `INVALIDATED`
leaving the block tree without viable branches

Let only a validator on an optimistic node be an *optimistic validator*.

When this specification only defines behaviour for an optimistic
node/validator, but *not* for the non-optimistic case, assume default
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