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backing: Remove redundant erasure encoding (#7469)

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* Remove redundant erasure encoding

Signed-off-by: Andrei Sandu <andrei-mihail@parity.io>

* Review feedback

Signed-off-by: Andrei Sandu <andrei-mihail@parity.io>

* fix comments

Signed-off-by: Andrei Sandu <andrei-mihail@parity.io>

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Signed-off-by: Andrei Sandu <andrei-mihail@parity.io>
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Andrei Sandu authored and GitHub committed 2023-07-07 08:20:30 +00:00
1 parent 518773a943
commit e8d567a1f5
9 files changed
+213 -62
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polkadot/roadmap/implementers-guide/src/node/utility/availability-store.md
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@@ -155,6 +155,7 @@ On `StoreChunk` message:
On `StoreAvailableData` message:
- Compute the erasure root of the available data and compare it with `expected_erasure_root`. Return `StoreAvailableDataError::InvalidErasureRoot` on mismatch.
- If there is no `CandidateMeta` under the candidate hash, create it with `State::Unavailable(now)`. Load the `CandidateMeta` otherwise.
- Store `data` under `("available", candidate_hash)` and set `data_available` to true.
- Store each chunk under `("chunk", candidate_hash, index)` and set every bit in `chunks_stored` to `1`.