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Marcin S
0940cdd1d7
* PVF: Don't dispute on missing artifact A dispute should never be raised if the local cache doesn't provide a certain artifact. You can not dispute based on this reason, as it is a local hardware issue and not related to the candidate to check. Design: Currently we assume that if we prepared an artifact, it remains there on-disk until we prune it, i.e. we never check again if it's still there. We can change it so that instead of artifact-not-found triggering a dispute, we retry once (like we do for AmbiguousWorkerDeath, except we don't dispute if it still doesn't work). And when enqueuing an execute job, we check for the artifact on-disk, and start preparation if not found. Changes: - [x] Integration test (should fail without the following changes) - [x] Check if artifact exists when executing, prepare if not - [x] Return an internal error when file is missing - [x] Retry once on internal errors - [x] Document design (update impl guide) * Add some context to wasm error message (it is quite long) * Fix impl guide * Add check for missing/inaccessible file * Add comment referencing Substrate issue * Add test for retrying internal errors --------- Co-authored-by: parity-processbot <>
The Polkadot Parachain Host Implementers' Guide
The implementers' guide is compiled from several source files with mdBook.
Hosted build
This is available here.
Local build
To view it locally from the repo root:
Ensure graphviz is installed:
brew install graphviz # for macOS
sudo apt-get install graphviz # for Ubuntu/Debian
Then install and build the book:
cargo install mdbook mdbook-linkcheck mdbook-graphviz mdbook-mermaid mdbook-last-changed
mdbook serve roadmap/implementers-guide
and in a second terminal window run:
open http://localhost:3000