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guide: Availability Recovery (#2011)

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* expand description

* basics of availability recovery

* finish availability recovery

* fill out missing text

* Update roadmap/implementers-guide/src/node/availability/availability-recovery.md

Co-authored-by: Fedor Sakharov <fedor.sakharov@gmail.com>

* fix signal handling

Co-authored-by: Fedor Sakharov <fedor.sakharov@gmail.com>
This commit is contained in:
Robert Habermeier
2020-12-01 14:58:31 -05:00
committed by GitHub
parent d5a39dffef
commit 9071120de1
4 changed files with 168 additions and 4 deletions
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polkadot/roadmap/implementers-guide/src/node/approval/approval-voting.md
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@@ -267,7 +267,7 @@ enum RequiredTranches {
* Return the earlier of our next no-show timeout or the tranche of our assignment, if not yet triggered
* Our next no-show timeout is computed by finding the earliest-received assignment within `n_tranches` for which we have not received an approval and adding `to_ticks(session_info.no_show_slots)` to it.
#### `launch_approval(SessionIndex, CandidateDescriptor, ValidatorIndex, block_hash, candidate_index)`:
#### `launch_approval(SessionIndex, CandidateReceipt, ValidatorIndex, block_hash, candidate_index)`:
* Extract the public key of the `ValidatorIndex` from the `SessionInfo` for the session.
* Issue an `AvailabilityRecoveryMessage::RecoverAvailableData(candidate, session_index, response_sender)`
* Load the historical validation code of the parachain by dispatching a `RuntimeApiRequest::HistoricalValidationCode(`descriptor.para_id`, `descriptor.relay_parent`)` against the state of `block_hash`.