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Ignore blocks that skip a large distance from their parent (#1530)

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## Proposed Changes

To mitigate the impact of minority forks on RAM and disk usage, this change rejects blocks whose parent lies more than 320 slots (10 epochs, ~1 hour) in the past. The behaviour is configurable via `lighthouse bn --max-skip-slots N`, and can be turned off entirely using `--max-skip-slots none`.

Co-authored-by: Paul Hauner <paul@paulhauner.com>
This commit is contained in:
Michael Sproul
2020-08-17 10:54:58 +00:00
parent a58aa6ee55
commit 719a69aee0
13 changed files with 131 additions and 4 deletions
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2
beacon_node/beacon_chain/src/test_utils.rs
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@@ -152,6 +152,7 @@ impl<E: EthSpec> BeaconChainHarness<DiskHarnessType<E>> {
let chain = BeaconChainBuilder::new(eth_spec_instance)
.logger(log.clone())
.custom_spec(spec.clone())
.import_max_skip_slots(None)
.store(store.clone())
.store_migrator(BlockingMigrator::new(store, log.clone()))
.data_dir(data_dir.path().to_path_buf())
@@ -190,6 +191,7 @@ impl<E: EthSpec> BeaconChainHarness<DiskHarnessType<E>> {
let chain = BeaconChainBuilder::new(eth_spec_instance)
.logger(log.clone())
.custom_spec(spec)
.import_max_skip_slots(None)
.store(store.clone())
.store_migrator(<BlockingMigrator<_, _, _> as Migrate<E, _, _>>::new(
store,