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Optimise slasher DB layout and switch to MDBX (#2776)

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## Issue Addressed

Closes #2286
Closes #2538
Closes #2342

## Proposed Changes

Part II of major slasher optimisations after #2767

These changes will be backwards-incompatible due to the move to MDBX (and the schema change) 😱 

* [x] Shrink attester keys from 16 bytes to 7 bytes.
* [x] Shrink attester records from 64 bytes to 6 bytes.
* [x] Separate `DiskConfig` from regular `Config`.
* [x] Add configuration for the LRU cache size.
* [x] Add a "migration" that deletes any legacy LMDB database.
This commit is contained in:
Michael Sproul
2021-12-21 08:23:17 +00:00
parent a290a3c537
commit 3b61ac9cbf
26 changed files with 963 additions and 566 deletions
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4
slasher/tests/proposer_slashings.rs
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@@ -9,7 +9,7 @@ use types::{Epoch, EthSpec};
#[test]
fn empty_pruning() {
let tempdir = tempdir().unwrap();
let config = Config::new(tempdir.path().into()).for_testing();
let config = Config::new(tempdir.path().into());
let slasher = Slasher::<E>::open(config, test_logger()).unwrap();
slasher.prune_database(Epoch::new(0)).unwrap();
}
@@ -19,7 +19,7 @@ fn block_pruning() {
let slots_per_epoch = E::slots_per_epoch();
let tempdir = tempdir().unwrap();
let mut config = Config::new(tempdir.path().into()).for_testing();
let mut config = Config::new(tempdir.path().into());
config.chunk_size = 2;
config.history_length = 2;