Paul Hauner d23437f726 Ensure FC uses the current slot from the store (#3402) ... ## Issue Addressed NA ## Proposed Changes Ensure that we read the current slot from the `fc_store` rather than the slot clock. This is because the `fc_store` will never allow the slot to go backwards, even if the system clock does. The `ProtoArray::find_head` function assumes a non-decreasing slot. This issue can cause logs like this: ``` ERRO Error whist recomputing head, error: ForkChoiceError(ProtoArrayError("find_head failed: InvalidBestNode(InvalidBestNodeInfo { start_root: 0xb22655aa2ae23075a60bd40797b3ba220db33d6fb86fa7910f0ed48e34bda72f, justified_checkpoint: Checkpoint { epoch: Epoch(111569), root: 0xb22655aa2ae23075a60bd40797b3ba220db33d6fb86fa7910f0ed48e34bda72f }, finalized_checkpoint: Checkpoint { epoch: Epoch(111568), root: 0x6140797e40c587b0d3f159483bbc603accb7b3af69891979d63efac437f9896f }, head_root: 0xb22655aa2ae23075a60bd40797b3ba220db33d6fb86fa7910f0ed48e34bda72f, head_justified_checkpoint: Some(Checkpoint { epoch: Epoch(111568), root: 0x6140797e40c587b0d3f159483bbc603accb7b3af69891979d63efac437f9896f }), head_finalized_checkpoint: Some(Checkpoint { epoch: Epoch(111567), root: 0x59b913d37383a158a9ea5546a572acc79e2cdfbc904c744744789d2c3814c570 }) })")), service: beacon, module: beacon_chain::canonical_head:499 ``` We expect nodes to automatically recover from this issue within seconds without any major impact. However, having *any* errors in the path of fork choice is undesirable and should be avoided. ## Additional Info NA		2022-08-02 00:58:25 +00:00
..
src	Ensure FC uses the current slot from the store (#3402)	2022-08-02 00:58:25 +00:00
.gitignore	v0.12 fork choice update (#1229)	2020-06-17 11:10:22 +10:00
Cargo.toml	Update to Rust 1.59 and 2021 edition (#3038)	2022-02-25 00:10:17 +00:00