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Avoid querying the local validator in availability recovery (#2792)

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* guide: don't request availability data from ourselves

* add QueryAllChunks message

* implement QueryAllChunks

* remove unused relay_parent from StoreChunk

* test QueryAllChunks

* fast paths make short roads

* test early exit behavior
This commit is contained in:
Robert Habermeier
2021-04-01 15:57:41 +02:00
committed by GitHub
parent a960e2ff6d
commit 5da762e728
10 changed files with 375 additions and 31 deletions
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polkadot/roadmap/implementers-guide/src/node/utility/availability-store.md
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@@ -133,6 +133,10 @@ On `QueryChunk` message:
This is `O(n)` in the size of the data, which may be large.
On `QueryAllChunks` message:
- Query `("meta", candidate_hash)`. If `None`, send an empty response and return.
- For all `1` bits in the `chunks_stored`, query `("chunk", candidate_hash, index)`. Ignore but warn on errors, and return a vector of all loaded chunks.
On `QueryChunkAvailability message:
- Query whether `("meta", candidate_hash)` exists and the bit at `index` is set.