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ava-labs / subnet-evm

Launch your own EVM as an Avalanche Subnet
https://docs.avax.network/subnets/create-a-fuji-subnet
GNU Lesser General Public License v3.0
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Make AWM Primary Network Optimization configurable #1230

Open martineckardt opened 1 month ago

martineckardt commented 1 month ago

Context and scope When running a Subnet with all validators in partial sync mode, it will not be able to verify incoming messages from the primary network. The optimization will try to gather signatures over the C-Chain's message from the Subnet's validator set. Since these do not sync the C-Chain they won't be able to sign the message.

We should make this optimization configurable.

Discussion and alternatives TBD

Open questions TBD

michaelkaplan13 commented 1 month ago

FWIW, this optimization will need to be removed all together in the E upgrade in order to allow for subnets with only subnet-only validators to verify messages from the C-Chain. This will also need to be accounted for in the awm-relayer so that it is able to determine which validators to query for BLS signatures.

aaronbuchwald commented 1 month ago

It could still be configurable in the E Upgrade if subnets opt in to validating the C-Chain. I'm not opposed to removing it completely in the E Upgrade if that's the easiest path, but it's worth evaluating the performance of aggregating a signature from >= 67% of the primary network before making that decision.