Snowbridge - Ethereum Client - Reject finalized updates without a sync committee in next store period #4482
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…c committee in next store period (paritytech#4478) While syncing Ethereum consensus updates to the Snowbridge Ethereum light client, the syncing process stalled due to error `InvalidSyncCommitteeUpdate` when importing the next sync committee for period `1087`. This bug manifested specifically because our light client checkpoint is a few weeks old (submitted to governance weeks ago) and had to catchup until a recent block. Since then, we have done thorough testing of the catchup sync process. ### Symptoms - Import next sync committee for period `1086` (essentially period `1087`). Light client store period = `1086`. - Import header in period `1087`. Light client store period = `1087`. The current and next sync committee is not updated, and is now in an outdated state. (current sync committee = `1086` and current sync committee = `1087`, where it should be current sync committee = `1087` and current sync committee = `None`) - Import next sync committee for period `1087` (essentially period `1088`) fails because the expected next sync committee's roots don't match. ### Bug The bug here is that the current and next sync committee's didn't handover when an update in the next period was received. ### Fix There are two possible fixes here: 1. Correctly handover sync committees when a header in the next period is received. 2. Reject updates in the next period until the next sync committee period is known. We opted for solution 2, which is more conservative and requires less changes. ### Polkadot-sdk versions This fix should be backported in polkadot-sdk versions 1.7 and up. Snowfork PR: #145 --------- Co-authored-by: Vincent Geddes <[email protected]>
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The CI pipeline was cancelled due to failure one of the required jobs. |
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@bkontur clippy is failing because the Cargo.lock file should be updated. Should I update it? My changes didn't require a lock file update. Also PR doc is failing because the format in 1.7 was different, I think. Should I remove the PR doc? Add it to 1.7.0 folder? 🤔 |
bkontur
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May 16, 2024
acatangiu
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May 16, 2024
acatangiu
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Upgrades Snowbridge with an Ethereum client fixes: - paritytech/polkadot-sdk#4504 - paritytech/polkadot-sdk#4482 Adds a migration to reset the Ethereum checkpoint. Will be reset again to the moment recent checkpoint before merged. TODO: - [x] Check migration works - [x] Check converting Sync Committee to prepared keys is OK for a migration --------- Co-authored-by: Adrian Catangiu <[email protected]> Co-authored-by: Vincent Geddes <[email protected]> Co-authored-by: ron <[email protected]>
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This is a cherry-pick from master of https://github.com/paritytech/polkadot-sdk/pull/3790 and https://github.com/paritytech/polkadot-sdk/pull/3727
Expected patches for (1.7.0):
snowbridge-pallet-ethereum-client