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srml: system: prune block hash mapping (#3062)

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* srml: system: prune block number to hash mapping

* srml: system: add test for block hash mapping pruning

* node: bump runtime version

* srml: system: wrap long line

* srml: system: use parameter type for block hash count

* srml: system: prune block hash mapping before storage root calculation

* srml: system: keep the genesis hash in block number map
This commit is contained in:
André Silva
2019-07-09 16:07:38 +01:00
committed by Gavin Wood
parent 459eb94c38
commit ed630e5eda
21 changed files with 149 additions and 15 deletions
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substrate/node-template/runtime/src/lib.rs
+6
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@@ -111,6 +111,10 @@ pub fn native_version() -> NativeVersion {
}
}
parameter_types! {
pub const BlockHashCount: BlockNumber = 250;
}
impl system::Trait for Runtime {
/// The identifier used to distinguish between accounts.
type AccountId = AccountId;
@@ -130,6 +134,8 @@ impl system::Trait for Runtime {
type Event = Event;
/// The ubiquitous origin type.
type Origin = Origin;
/// Maximum number of block number to block hash mappings to keep (oldest pruned first).
type BlockHashCount = BlockHashCount;
}
impl aura::Trait for Runtime {