Correctly handle VSC packet with duplicate val updates on consumer #846
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shaspitz
requested review from
jtremback,
mpoke,
sainoe,
MSalopek,
mmulji-ic,
glnro and
yaruwangway
as code owners
glnro
approved these changes
Apr 12, 2023
x/ccv/consumer/keeper/relay.go
Outdated
Comment on lines
53
to
58
| if !exists { | ||
| pendingChanges = newChanges.ValidatorUpdates | ||
| // Still accumulate changes if no pending changes exist. New changes must be deduplicated | ||
| pendingChanges = utils.AccumulateChanges([]abci.ValidatorUpdate{}, newChanges.ValidatorUpdates) | ||
| } else { | ||
| pendingChanges = utils.AccumulateChanges(currentChanges.ValidatorUpdates, newChanges.ValidatorUpdates) | ||
| } |
There was a problem hiding this comment.
What about:
currentValUpdates := []abci.ValidatorUpdate{}
currentChanges, exists := k.GetPendingChanges(ctx)
if exists {
currentValUpdates = currentChanges.ValidatorUpdates
}
pendingChanges = utils.AccumulateChanges(currentValUpdates, newChanges.ValidatorUpdates)
sainoe
approved these changes
Apr 13, 2023
mpoke
approved these changes
Apr 13, 2023
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Description
Fixes a bug seen in the Neutron testnet where tendermint was sent duplicate val updates for the same validator, with different powers. This is a consumer side fix, and a corresponding provider side fix (involving key assignment), should be made eventually.
Linked issues
Closes:
#<issue>Type of change
If you've checked more than one of the first three boxes, consider splitting this PR into multiple PRs!
Feature: Changes and/or adds code behavior, irrelevant to bug fixesFix: Changes and/or adds code behavior, specifically to fix a bugRefactor: Changes existing code style, naming, structure, etc.Testing: Adds testingDocs: Adds documentationRegression tests
Existing tests for
OnRecvVSCPacketlikeTestOnRecvVSCPacketNew behavior tests
TestOnRecvVSCPacketDuplicateUpdates, which fails without the fix fromrelay.goVersioning Implications
If the above box is checked, which version should be bumped?
MAJOR: Consensus breaking changes to both the provider and consumers(s), including updates/breaking changes to IBC communication between provider and consumer(s)MINOR: Consensus breaking changes which affect either only the provider or only the consumer(s)PATCH: Non consensus breaking changesTargeting