fix(resharding): storage costs #12661
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Longarithm
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wacban
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Dec 23, 2024
| @@ -698,7 +698,7 @@ impl Trie { | |||
| storage, | |||
| memtries, | |||
| root, | |||
| charge_gas_for_trie_node_access: flat_storage_chunk_view.is_none(), | |||
| charge_gas_for_trie_node_access: false, | |||
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Technically speaking this should be something more like the following. This one breaks replayability but I don't really mind to be honest given we actually only replay using tools and not this code path.
!ProtocolVersion::FlatStorage.enabled(protocol_version).
| @@ -754,6 +841,15 @@ fn test_resharding_v3_base(params: TestReshardingParameters) { | |||
| } | |||
| trie_sanity_check.assert_state_sanity(&clients, expected_num_shards); | |||
| latest_block_height.set(tip.height); | |||
| let shard_layout = | |||
| client.epoch_manager.get_epoch_config(&tip.epoch_id).unwrap().shard_layout; | |||
| println!( | |||
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nit: tracing::info and use the structured logging by setting fields rather than putting them in string
tracing::info!(
last_block_hash=?tip.last_block_hash,
...
"block"
);
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Fixing old storage costs inaccuracy, which caused a failure during some forknet experiment https://near.zulipchat.com/#narrow/channel/407288-core.2Fresharding/topic/forknet/near/489699725
The fix is one-liner,
charge_gas_for_trie_node_access: false,. Originally it wasn't the case because we had a protocol upgrade from trie to flat storage read costs, so we needed to compute costs differently. But since flat storage costs were enabled, and we started to use only the flat storage read costs. Moreover, later it became controlled by runtimeParameter::FlatStorageReads, but the original condition stayed.And now, when we do flat storage resharding, flat storage indeed doesn't exist for a while, which triggered trie costs for some blocks during resharding again. However, on chunk validation, costs were correct, so chain couldn't validate any chunks since resharding start.
I test this by calling a contract which reads a key and then writes key-value pair back. For the old code, key read charges more cost than it should, which causes InvalidOutcomesProof error.